what is difference between claim and thesis

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Identifying Thesis Statements, Claims, and Evidence

Thesis statements, claims, and evidence, introduction.

The three important parts of an argumentative essay are:

• A thesis statement is a sentence, usually in the first paragraph of an article, that expresses the article’s main point. It is not a fact; it’s a statement that you could disagree with.  Therefore, the author has to convince you that the statement is correct.
• Claims are statements that support the thesis statement, but like the thesis statement,  are not facts.  Because a claim is not a fact, it requires supporting evidence.
• Evidence is factual information that shows a claim is true.  Usually, writers have to conduct their own research to find evidence that supports their ideas.  The evidence may include statistical (numerical) information, the opinions of experts, studies, personal experience, scholarly articles, or reports.

Each paragraph in the article is numbered at the beginning of the first sentence.

Paragraphs 1-7

Identifying the Thesis Statement. Paragraph 2 ends with this thesis statement:  “People’s prior convictions should not be held against them in their pursuit of higher learning.”  It is a thesis statement for three reasons:

• It is the article’s main argument.
• It is not a fact. Someone could think that peoples’ prior convictions should affect their access to higher education.
• It requires evidence to show that it is true.

Finding Claims.  A claim is statement that supports a thesis statement.  Like a thesis, it is not a fact so it needs to be supported by evidence.

You have already identified the article’s thesis statement: “People’s prior convictions should not be held against them in their pursuit of higher learning.”

Like the thesis, a claim be an idea that the author believes to be true, but others may not agree.  For this reason, a claim needs support.

• Question 1.  Can you find a claim in paragraph 3? Look for a statement that might be true, but needs to be supported by evidence.

Finding Evidence. 

Paragraphs 5-7 offer one type of evidence to support the claim you identified in the last question.  Reread paragraphs 5-7.

• Question 2.  Which word best describes the kind of evidence included in those paragraphs:  A report, a study, personal experience of the author, statistics, or the opinion of an expert?

Paragraphs 8-10

Finding Claims

Paragraph 8 makes two claims:

• “The United States needs to have more of this transformative power of education.”
• “The country [the United States] incarcerates more people and at a higher rate than any other nation in the world.”

Finding Evidence

Paragraphs 8 and 9 include these statistics as evidence:

• “The U.S. accounts for less than 5 percent of the world population but nearly 25 percent of the incarcerated population around the globe.”
• “Roughly 2.2 million people in the United States are essentially locked away in cages. About 1 in 5 of those people are locked up for drug offenses.”

Question 3. Does this evidence support claim 1 from paragraph 8 (about the transformative power of education) or claim 2 (about the U.S.’s high incarceration rate)?

Question 4. Which word best describes this kind of evidence:  A report, a study, personal experience of the author, statistics, or the opinion of an expert?

Paragraphs 11-13

Remember that in paragraph 2, Andrisse writes that:

• “People’s prior convictions should not be held against them in their pursuit of higher learning.” (Thesis statement)
• “More must be done to remove the various barriers that exist between formerly incarcerated individuals such as myself and higher education.” (Claim)

Now, review paragraphs 11-13 (Early life of crime). In these paragraphs, Andrisse shares more of his personal story.

Question 5. Do you think his personal story is evidence for statement 1 above, statement 2, both, or neither one?

Question 6. Is yes, which one(s)?

Question 7. Do you think his personal story is good evidence?  Does it persuade you to agree with him?

Paragraphs 14-16

Listed below are some claims that Andrisse makes in paragraph 14.  Below each claim, please write the supporting evidence from paragraphs 15 and 16.  If you can’t find any evidence,  write “none.”

Claim:  The more education a person has, the higher their income.

Claim: Similarly, the more education a person has, the less likely they are to return to prison.

Paragraphs 17-19

Evaluating Evidence

In these paragraphs, Andrisse returns to his personal story. He explains how his father’s illness inspired him to become a doctor and shares that he was accepted to only one of six biomedical graduate programs.

Do you think that this part of Andrisse’s story serves as evidence (support) for any claims that you’ve identified so far?   Or does it support his general thesis that “people’s prior convictions should not be held against them in pursuit of higher learning?” Please explain your answer.

Paragraphs 20-23

Andrisse uses his personal experience to repeat a claim he makes in paragraph 3, that “more must be done to remove the various barriers that exist between formerly incarcerated individuals such as myself and higher education.”

To support this statement, he has to show that barriers exist.  One barrier he identifies is the cost of college. He then explains the advantages of offering Pell grants to incarcerated people.

What evidence in paragraphs 21-23 support his claim about the success of Pell grants?

Paragraphs  24-28 (Remove questions about drug crimes from federal aid forms)

In this section, Andrisse argues that federal aid forms should not ask students about prior drug convictions.  To support that claim, he includes a statistic about students who had to answer a similar question on their college application.

What statistic does he include?

In paragraph 25, he assumes that if a question about drug convictions discourages students from applying to college, it will probably also discourage them from applying for federal aid.

What do you think about this assumption?   Do you think it’s reasonable or do you think Andrisse needs stronger evidence to show that federal aid forms should not ask students about prior drug convictions?

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What is a claim?

A claim is a statement that presents an idea or series of ideas as arguments. Arguments therefore consist of claims, or another way to put it is, to say that claims are the building blocks of a good argument.

In research writing, claims will be the backbone that form a thesis or a hypothesis (here the term ‘hypothesis’ refers to the argument that is evidenced within the scope of the work).

According to Heady (2013) “Claims are the points you want to prove, interpretations you want to offer, and assertions you want to make” (p. 74). Importantly, in academia claims are statements that can be supported by evidence.

‘Traditional classroom teaching is boring’

For example, claiming that traditional classroom teaching is boring is not a good claim because it lacks definition (what does ‘traditional classroom teaching’ actually mean? and how do we measure ‘boring’)? It may also be a ‘sweeping statement’ (meaning it’s far too general in scope). However, claiming that “traditional teaching methods, like didactic instruction, do not provide sufficient interaction with students and lead to poor learning outcomes” is a good argumentative claim, because it can be investigated and measured.

Characteristics of a good claim

In order to make effective claims it is important to understand the difference between statements  and  sentences. While a statement is also a sentence (in that it is a grammatical unit with subject, verb, object clause), not all sentences are statements (in other words, not all sentences consist of a stance or a position).

The following provides examples of the difference between sentences and statements. The statements present a stance or position about the topic under discussion. This is important to understand as all claims must consist of a stance towards the topic.

Function of claims

The function of claims in academic writing is to provoke, analyse, or interpret rather than merely describe or present facts. They can do this by affirming, acknowledging, confirming, or refuting the proposition being made. In this way, claims do the job of building an overall argument or thesis in a piece of work (i.e. each claim progresses the key argument). It is for this reason that claims will appear in topic sentences, thesis statements, introductory and concluding sentences/paragraphs.

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The Writing Center @ UVa

314 bryan hall, writing theses and claims.

Virtually all genres of academic writing rely to some degree on claims as the engine of arguments, whether as the main point of arguments (the central claim or thesis) or as supporting points (subclaims).

For this reason, writing effective claims is vital to success in academic writing. But what is a claim? How do you distinguish it from other statements. To understand claims, it can be helpful to distinguish them from facts and opinions, as follows.

What is a claim?

• Example: Vanilla ice cream is the highest selling flavor of ice cream in the United States . (This is a fact because it can’t be reasonably argued against. The sales figures are pretty ironclad.)
• Example: Vanilla ice cream is the best flavor of ice cream.  (This is an opinion because it isn’t arguable. It’s based solely in someone’s subjectivity, their preferences.)
• Example: The ubiquity of vanilla ice cream disconnects consumers from the complex and unethical agriculture practices that create it. (This is a claim because it can be argued with, and it can be supported with evidence)

Dispelling some myths about claims

Sometimes, people are given a set of rules about claims that don’t apply in all contexts. Here are some common beliefs about claims that aren’t necessarily true or are perhaps only true in some circumstances.

• NOT NECESSARILY TRUE. This may have been true in high school writing contexts, but in college and beyond different audiences have different expectations for where central claims will be located. Sometimes it’s after a few paragraphs. Sometimes it’s in the middle. Sometimes it’s at the end. At the college level, it’s time to start thinking more rhetorically (meaning thinking about audience expectations and impact) about where the central claim should go.
• NOT NECESSARILY TRUE. You can use a formula, but you don’t have to. And the formula’s you’ve learned previously may only be useful in the specific context you in which you learned them.
• NOT TRUE AT ALL. Central claims differ depending on the genre in which you’re writing. They look different in different disciplines (history, english, psychology, biology), and they look different in genres outside of academia, as well.
• NOT NECESSARILY TRUE. Again, they might be, but as writing becomes more sophisticated and topics more complex, it’s likely that you’ll come up with central or supporting claims that are more than one sentence long. That’s fine, potentially good even.

Two Types of claims

• Example: The University of Virginia should change its admissions practices in an effort to admit more low-income students.
• Example: The University of Virginia’s admissions practices create systemic hurdles to the admission of low-income students.

Two ways of doing claims

• Explicit – a claim that is clearly stated
• Implicit – a claim that is implied

Good claims have 3 features

• Focused – typically, the most specific a claim is the better
• Arguable – someone could reasonably argue against it
• This example is bad because it’s not focused enough. It’s technically a claim, but it’s too broad and not revelatory.
• This claim is better because it’s more focused and as a result more arguable and revelatory.

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Thesis Statements

What this handout is about.

This handout describes what a thesis statement is, how thesis statements work in your writing, and how you can craft or refine one for your draft.

Introduction

Writing in college often takes the form of persuasion—convincing others that you have an interesting, logical point of view on the subject you are studying. Persuasion is a skill you practice regularly in your daily life. You persuade your roommate to clean up, your parents to let you borrow the car, your friend to vote for your favorite candidate or policy. In college, course assignments often ask you to make a persuasive case in writing. You are asked to convince your reader of your point of view. This form of persuasion, often called academic argument, follows a predictable pattern in writing. After a brief introduction of your topic, you state your point of view on the topic directly and often in one sentence. This sentence is the thesis statement, and it serves as a summary of the argument you’ll make in the rest of your paper.

What is a thesis statement?

A thesis statement:

• tells the reader how you will interpret the significance of the subject matter under discussion.
• is a road map for the paper; in other words, it tells the reader what to expect from the rest of the paper.
• directly answers the question asked of you. A thesis is an interpretation of a question or subject, not the subject itself. The subject, or topic, of an essay might be World War II or Moby Dick; a thesis must then offer a way to understand the war or the novel.
• makes a claim that others might dispute.
• is usually a single sentence near the beginning of your paper (most often, at the end of the first paragraph) that presents your argument to the reader. The rest of the paper, the body of the essay, gathers and organizes evidence that will persuade the reader of the logic of your interpretation.

If your assignment asks you to take a position or develop a claim about a subject, you may need to convey that position or claim in a thesis statement near the beginning of your draft. The assignment may not explicitly state that you need a thesis statement because your instructor may assume you will include one. When in doubt, ask your instructor if the assignment requires a thesis statement. When an assignment asks you to analyze, to interpret, to compare and contrast, to demonstrate cause and effect, or to take a stand on an issue, it is likely that you are being asked to develop a thesis and to support it persuasively. (Check out our handout on understanding assignments for more information.)

How do I create a thesis?

A thesis is the result of a lengthy thinking process. Formulating a thesis is not the first thing you do after reading an essay assignment. Before you develop an argument on any topic, you have to collect and organize evidence, look for possible relationships between known facts (such as surprising contrasts or similarities), and think about the significance of these relationships. Once you do this thinking, you will probably have a “working thesis” that presents a basic or main idea and an argument that you think you can support with evidence. Both the argument and your thesis are likely to need adjustment along the way.

Writers use all kinds of techniques to stimulate their thinking and to help them clarify relationships or comprehend the broader significance of a topic and arrive at a thesis statement. For more ideas on how to get started, see our handout on brainstorming .

How do I know if my thesis is strong?

If there’s time, run it by your instructor or make an appointment at the Writing Center to get some feedback. Even if you do not have time to get advice elsewhere, you can do some thesis evaluation of your own. When reviewing your first draft and its working thesis, ask yourself the following :

• Do I answer the question? Re-reading the question prompt after constructing a working thesis can help you fix an argument that misses the focus of the question. If the prompt isn’t phrased as a question, try to rephrase it. For example, “Discuss the effect of X on Y” can be rephrased as “What is the effect of X on Y?”
• Have I taken a position that others might challenge or oppose? If your thesis simply states facts that no one would, or even could, disagree with, it’s possible that you are simply providing a summary, rather than making an argument.
• Is my thesis statement specific enough? Thesis statements that are too vague often do not have a strong argument. If your thesis contains words like “good” or “successful,” see if you could be more specific: why is something “good”; what specifically makes something “successful”?
• Does my thesis pass the “So what?” test? If a reader’s first response is likely to  be “So what?” then you need to clarify, to forge a relationship, or to connect to a larger issue.
• Does my essay support my thesis specifically and without wandering? If your thesis and the body of your essay do not seem to go together, one of them has to change. It’s okay to change your working thesis to reflect things you have figured out in the course of writing your paper. Remember, always reassess and revise your writing as necessary.
• Does my thesis pass the “how and why?” test? If a reader’s first response is “how?” or “why?” your thesis may be too open-ended and lack guidance for the reader. See what you can add to give the reader a better take on your position right from the beginning.

Suppose you are taking a course on contemporary communication, and the instructor hands out the following essay assignment: “Discuss the impact of social media on public awareness.” Looking back at your notes, you might start with this working thesis:

Social media impacts public awareness in both positive and negative ways.

You can use the questions above to help you revise this general statement into a stronger thesis.

• Do I answer the question? You can analyze this if you rephrase “discuss the impact” as “what is the impact?” This way, you can see that you’ve answered the question only very generally with the vague “positive and negative ways.”
• Have I taken a position that others might challenge or oppose? Not likely. Only people who maintain that social media has a solely positive or solely negative impact could disagree.
• Is my thesis statement specific enough? No. What are the positive effects? What are the negative effects?
• Does my thesis pass the “how and why?” test? No. Why are they positive? How are they positive? What are their causes? Why are they negative? How are they negative? What are their causes?
• Does my thesis pass the “So what?” test? No. Why should anyone care about the positive and/or negative impact of social media?

After thinking about your answers to these questions, you decide to focus on the one impact you feel strongly about and have strong evidence for:

Because not every voice on social media is reliable, people have become much more critical consumers of information, and thus, more informed voters.

This version is a much stronger thesis! It answers the question, takes a specific position that others can challenge, and it gives a sense of why it matters.

Let’s try another. Suppose your literature professor hands out the following assignment in a class on the American novel: Write an analysis of some aspect of Mark Twain’s novel Huckleberry Finn. “This will be easy,” you think. “I loved Huckleberry Finn!” You grab a pad of paper and write:

Mark Twain’s Huckleberry Finn is a great American novel.

You begin to analyze your thesis:

• Do I answer the question? No. The prompt asks you to analyze some aspect of the novel. Your working thesis is a statement of general appreciation for the entire novel.

Think about aspects of the novel that are important to its structure or meaning—for example, the role of storytelling, the contrasting scenes between the shore and the river, or the relationships between adults and children. Now you write:

In Huckleberry Finn, Mark Twain develops a contrast between life on the river and life on the shore.

• Do I answer the question? Yes!
• Have I taken a position that others might challenge or oppose? Not really. This contrast is well-known and accepted.
• Is my thesis statement specific enough? It’s getting there–you have highlighted an important aspect of the novel for investigation. However, it’s still not clear what your analysis will reveal.
• Does my thesis pass the “how and why?” test? Not yet. Compare scenes from the book and see what you discover. Free write, make lists, jot down Huck’s actions and reactions and anything else that seems interesting.
• Does my thesis pass the “So what?” test? What’s the point of this contrast? What does it signify?”

After examining the evidence and considering your own insights, you write:

Through its contrasting river and shore scenes, Twain’s Huckleberry Finn suggests that to find the true expression of American democratic ideals, one must leave “civilized” society and go back to nature.

This final thesis statement presents an interpretation of a literary work based on an analysis of its content. Of course, for the essay itself to be successful, you must now present evidence from the novel that will convince the reader of your interpretation.

Works consulted

We consulted these works while writing this handout. This is not a comprehensive list of resources on the handout’s topic, and we encourage you to do your own research to find additional publications. Please do not use this list as a model for the format of your own reference list, as it may not match the citation style you are using. For guidance on formatting citations, please see the UNC Libraries citation tutorial . We revise these tips periodically and welcome feedback.

Anson, Chris M., and Robert A. Schwegler. 2010. The Longman Handbook for Writers and Readers , 6th ed. New York: Longman.

Lunsford, Andrea A. 2015. The St. Martin’s Handbook , 8th ed. Boston: Bedford/St Martin’s.

Ramage, John D., John C. Bean, and June Johnson. 2018. The Allyn & Bacon Guide to Writing , 8th ed. New York: Pearson.

Ruszkiewicz, John J., Christy Friend, Daniel Seward, and Maxine Hairston. 2010. The Scott, Foresman Handbook for Writers , 9th ed. Boston: Pearson Education.

You may reproduce it for non-commercial use if you use the entire handout and attribute the source: The Writing Center, University of North Carolina at Chapel Hill

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While Sandel argues that pursuing perfection through genetic engineering would decrease our sense of humility, he claims that the sense of solidarity we would lose is also important.

This thesis summarizes several points in Sandel’s argument, but it does not make a claim about how we should understand his argument. A reader who read Sandel’s argument would not also need to read an essay based on this descriptive thesis.  

Broad thesis (arguable, but difficult to support with evidence) 

Michael Sandel’s arguments about genetic engineering do not take into consideration all the relevant issues.

This is an arguable claim because it would be possible to argue against it by saying that Michael Sandel’s arguments do take all of the relevant issues into consideration. But the claim is too broad. Because the thesis does not specify which “issues” it is focused on—or why it matters if they are considered—readers won’t know what the rest of the essay will argue, and the writer won’t know what to focus on. If there is a particular issue that Sandel does not address, then a more specific version of the thesis would include that issue—hand an explanation of why it is important.  

Arguable thesis with analytical claim 

While Sandel argues persuasively that our instinct to “remake” (54) ourselves into something ever more perfect is a problem, his belief that we can always draw a line between what is medically necessary and what makes us simply “better than well” (51) is less convincing.

This is an arguable analytical claim. To argue for this claim, the essay writer will need to show how evidence from the article itself points to this interpretation. It’s also a reasonable scope for a thesis because it can be supported with evidence available in the text and is neither too broad nor too narrow.  

Arguable thesis with normative claim 

Given Sandel’s argument against genetic enhancement, we should not allow parents to decide on using Human Growth Hormone for their children.

This thesis tells us what we should do about a particular issue discussed in Sandel’s article, but it does not tell us how we should understand Sandel’s argument.  

Questions to ask about your thesis 

• Is the thesis truly arguable? Does it speak to a genuine dilemma in the source, or would most readers automatically agree with it?  
• Is the thesis too obvious? Again, would most or all readers agree with it without needing to see your argument?  
• Is the thesis complex enough to require a whole essay's worth of argument?  
• Is the thesis supportable with evidence from the text rather than with generalizations or outside research?  
• Would anyone want to read a paper in which this thesis was developed? That is, can you explain what this paper is adding to our understanding of a problem, question, or topic?
• picture_as_pdf Thesis

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• How to Write a Thesis Statement | 4 Steps & Examples

How to Write a Thesis Statement | 4 Steps & Examples

Published on January 11, 2019 by Shona McCombes . Revised on August 15, 2023 by Eoghan Ryan.

A thesis statement is a sentence that sums up the central point of your paper or essay . It usually comes near the end of your introduction .

Your thesis will look a bit different depending on the type of essay you’re writing. But the thesis statement should always clearly state the main idea you want to get across. Everything else in your essay should relate back to this idea.

You can write your thesis statement by following four simple steps:

• Start with a question
• Write your initial answer
• Develop your answer
• Refine your thesis statement

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Table of contents

What is a thesis statement, placement of the thesis statement, step 1: start with a question, step 2: write your initial answer, step 3: develop your answer, step 4: refine your thesis statement, types of thesis statements, other interesting articles, frequently asked questions about thesis statements.

A thesis statement summarizes the central points of your essay. It is a signpost telling the reader what the essay will argue and why.

The best thesis statements are:

• Concise: A good thesis statement is short and sweet—don’t use more words than necessary. State your point clearly and directly in one or two sentences.
• Contentious: Your thesis shouldn’t be a simple statement of fact that everyone already knows. A good thesis statement is a claim that requires further evidence or analysis to back it up.
• Coherent: Everything mentioned in your thesis statement must be supported and explained in the rest of your paper.

Prevent plagiarism. Run a free check.

The thesis statement generally appears at the end of your essay introduction or research paper introduction .

The spread of the internet has had a world-changing effect, not least on the world of education. The use of the internet in academic contexts and among young people more generally is hotly debated. For many who did not grow up with this technology, its effects seem alarming and potentially harmful. This concern, while understandable, is misguided. The negatives of internet use are outweighed by its many benefits for education: the internet facilitates easier access to information, exposure to different perspectives, and a flexible learning environment for both students and teachers.

You should come up with an initial thesis, sometimes called a working thesis , early in the writing process . As soon as you’ve decided on your essay topic , you need to work out what you want to say about it—a clear thesis will give your essay direction and structure.

You might already have a question in your assignment, but if not, try to come up with your own. What would you like to find out or decide about your topic?

For example, you might ask:

After some initial research, you can formulate a tentative answer to this question. At this stage it can be simple, and it should guide the research process and writing process .

Now you need to consider why this is your answer and how you will convince your reader to agree with you. As you read more about your topic and begin writing, your answer should get more detailed.

In your essay about the internet and education, the thesis states your position and sketches out the key arguments you’ll use to support it.

The negatives of internet use are outweighed by its many benefits for education because it facilitates easier access to information.

In your essay about braille, the thesis statement summarizes the key historical development that you’ll explain.

The invention of braille in the 19th century transformed the lives of blind people, allowing them to participate more actively in public life.

A strong thesis statement should tell the reader:

• Why you hold this position
• What they’ll learn from your essay
• The key points of your argument or narrative

The final thesis statement doesn’t just state your position, but summarizes your overall argument or the entire topic you’re going to explain. To strengthen a weak thesis statement, it can help to consider the broader context of your topic.

These examples are more specific and show that you’ll explore your topic in depth.

Your thesis statement should match the goals of your essay, which vary depending on the type of essay you’re writing:

• In an argumentative essay , your thesis statement should take a strong position. Your aim in the essay is to convince your reader of this thesis based on evidence and logical reasoning.
• In an expository essay , you’ll aim to explain the facts of a topic or process. Your thesis statement doesn’t have to include a strong opinion in this case, but it should clearly state the central point you want to make, and mention the key elements you’ll explain.

If you want to know more about AI tools , college essays , or fallacies make sure to check out some of our other articles with explanations and examples or go directly to our tools!

• Ad hominem fallacy
• Post hoc fallacy
• Appeal to authority fallacy
• False cause fallacy
• Sunk cost fallacy

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A thesis statement is a sentence that sums up the central point of your paper or essay . Everything else you write should relate to this key idea.

The thesis statement is essential in any academic essay or research paper for two main reasons:

• It gives your writing direction and focus.
• It gives the reader a concise summary of your main point.

Without a clear thesis statement, an essay can end up rambling and unfocused, leaving your reader unsure of exactly what you want to say.

Follow these four steps to come up with a thesis statement :

• Ask a question about your topic .
• Write your initial answer.
• Develop your answer by including reasons.
• Refine your answer, adding more detail and nuance.

The thesis statement should be placed at the end of your essay introduction .

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McCombes, S. (2023, August 15). How to Write a Thesis Statement | 4 Steps & Examples. Scribbr. Retrieved September 4, 2024, from https://www.scribbr.com/academic-essay/thesis-statement/

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Your instructor may ask you to provide a thesis statement, rather than a research question. The main difference between a thesis statement and a research question is that a thesis statement makes a claim upfront that you will attempt to validate in your paper. A thesis statement:

• States your position on a topic
• Is not always required when writing a research paper
• Is often your research question reworded as a statement with a position

For more information on writing thesis statements, see UMGC's Online Guide to Writing and Research: Thesis Statement and Controlling Idea .

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Is a Thesis the same as a Claim: How to Write Each

Comparing Thesis and a Claim

A thesis is a statement that carries the main idea of an essay, paper, or piece of writing to help the writer control the ideas within the paper. It reflects the main argument or point of the writer on a particular topic.

A claim is the beginning or end of an argument that needs to be supported with proper evidence and reasoning. This is because the audience to whom the claim is relayed can challenge it, and therefore, the argument made by the claim must stand.

Is a Thesis the same as a Claim?

Thesis statements are not necessarily claims, but they can be used as claims. For example, a thesis is the main argument in writing, while claims are the points that can be accrued from that statement.

Therefore, the thesis must be in the introductory part of ant piece of writing. Everything that you include in that writing must reflect back to the thesis statement. Backing the argument is what brings up a claim.

Therefore, claims are topic sentences that include the argument that backs the thesis.

They are a sneak peek of what you will include in your essay paragraphs and must be supported by factual information to bring out relevance.

However, a thesis statement can be a claim in argumentative papers . When you are arguing against something, you make a claim that you are supposed to back in the rest of the writing.

The statement is a claim because it should demonstrate the value, policy, facts, and examples that are recent, accurate, and reliable. Therefore, one can refer to a thesis statement as a main claim that sets up the way for other minor claims that support it.

These claims help build a well-rounded argument in the essay by showing that you have considered many possible positions to support your topic.

How to write a Thesis Statement

A thesis statement must be included in essays to provide the reader with a guide of your arguments and opinions in the essay and help you organize and develop your arguments.

A good thesis statement must be coherent, concise, and contentious. It should appear as the last part of the introduction of an essay or research paper.

There are four steps that one should follow when writing a thesis statement:

1. Start with a Question

To write a thesis statement, you need to come up with a question about what you want to find out about the topic you are writing about.

This question is like the initial thesis, which can be referred to as a working thesis because you are in the early stages of the writing process. The question should be based on what you want to say about the topic.

2. Write the Answer to the Question

After identifying the main question that should be asked about the topic, answer the question in detail. The answer to this question is what provides the root that your essay or research paper will follow.

Make the answer simple to ensure that you do not complicate your views. For example, if the question was on what are the effects of the internet on education, you can come up with an answer such as the internet has more negative effects on education today compared to its positive impacts.

3. Develop the Answer

After getting the answer, it is now time to consider why it effectively answers your essay question and how it will help you convince the reader that the arguments you will make in the essay are valid.

To do this, you need to research more so that when you begin to write, the answer will be provided and focused on extensively.

The answer you come up with should also effectively portray the position you have taken in the essay and sketch out the arguments that you will use to support it throughout the essay.

4. Refine the Thesis Statement

This is all about making sure that your thesis statement is strong enough.

Therefore, you must ensure that it tells the readers why you hold the position you have taken about the essay topic, what they will learn after going through your writing, and the key points of your argument or narrative that will be focused on in the essay.

A good thesis statement is not all about stating your position on the essay topic but also summarizing your overall argument on that particular topic. Considering this moves your thesis from weak to strong.

5. Make it Specific

The thesis statement should be straight to the point. Anything that will not be discussed in the essay should not be involved, and only specific evidence should be used to support it.

The language should also be specific. This means that the thesis statement should not report a statistic or a fact but make an assertion.

How to Write Claims

Claim statements in an essay or research paper must be arguable but should be stated as facts. This means that they should be debatable but at the same time show inquiry and evidence.

A claim cannot be a personal feeling or opinion about something. It must be something that is supportable using factual arguments. Therefore, a claim must be specific to assert a focused argument.

Also, claims define the goals, scope, and direction that your paragraphs will take. To write a good claim statement, you should:

Come up with a Strong Argument

A claim must be an argument that is in favor or against the topic of study. This argument should be supported by sufficient evidence to convince the reader that it is valid.

The Claim Should be Stated as a Fact

The claim must look as a fact to the reader. For example, the sentence ‘incarceration of juvenile delinquents is illegal’ is not a claim.

Instead, incarceration of juvenile delinquents is no longer an appropriate punishment in America’ is a factual claim.

The Claim Should be Straight to the Point

When a claim is direct, it shows you all the aspects that you will need to tackle. If it involves a lot of information, you are likely to make a vague argument that may not make sense or convince the reader.

James Lotta

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Your instructor may ask you to provide a thesis statement, rather than a research question. The main difference between a thesis statement and a research question is that a thesis statement makes a claim upfront that you will attempt to validate in your paper. A thesis statement: 

• States your position on a topic
• Is not always required when writing a research paper
• Is often your research question reworded as a statement with a position

For more information on writing thesis statements, see the NIC Writing Support Resources page: Thesis Statements .

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• Last Updated: Jul 17, 2024 3:10 PM
• URL: https://library.nic.bc.ca/researchtutorial

Thesis Statements

A strong component of academic writing that all writers must understand is the difference between subject, topic, and thesis. Knowing the difference between these three terms will help you create a strong argument for your paper. This handout is designed to help inform you about these three distinct introductory elements, and it will also help you transition from deciding on a subject you are writing about, to the essay’s topic, and finally to your overall thesis.

The subject of your paper is a broad idea that stands alone. At this point, there is no detailed information associated with it or any kind of argumentation. It serves, in essence, as a launching pad for you to form an idea, or argument, which will eventually become the purpose of your paper.

Example: Women

The topic of your paper is an evolved, narrower version of your subject. Here is where you add a detailed, more conclusive area of focus for your paper so that you can eradicate vagueness.

Example: Women in late 1990s television

The thesis acts as the final idea on which the entirety of your paper will focus. It is the central message that ties the whole paper together into one definitive purpose that prepares readers for what you are arguing.

Example : Although people may argue that television in the late 1990s helped portray women in a more honest and intrepid light, programs including Buffy the Vampire Slayer, Charmed , and Sex and the City failed to illustrate the depth and truth of womanhood, choosing to focus heavily on clichéd romantic entanglements, unbecoming pathetic quarrels, and thin temptresses adorned with fashionable costumes and bare midriffs.

Subject to Topic

The following are some suggestions to help you shift from a broad subject area to a narrow, focused topic.

Seek out narrow topics

Inappropriate.

Subject:  Women

Topic:  Women in history

Note:  In this case, the topic is too large to create a complex thesis statement worthy of a paper. The broader the topic, the more difficulty you will have narrowing your argument enough to affect readers.

Appropriate

Topic:  Famous women aviators of WWII

Note:  Here the topic as narrowed down the subject by focusing on women belonging to a specific profession in a particular historical period. It is thorough enough to discover a thesis statement.

Choose arguable topics

Subject:  Toni Morrison

Topic:  Biography

Note:  This idea does not allow for speculation or disagreement, which gives it an underdeveloped quality.

Topic:  Literary merits of the novel Tar Baby

Note:  This idea allows for speculation or disagreement, which gives it a strong, developed quality.

Choose topics within your comfort zone

Subject:  Linguistics

Topic:  OE Northumbrian dialects

Note:  Unless you have studied OE Northumbrian dialects at length, it perhaps poses too high of a research challenge to pursue.

Subject:  College Freshmen

Topic:  The Freshman Fifteen

Note:  This topic is narrow enough and familiar enough to most college students to purse as a topic.

Rules for Thesis Statements

• Needs to correspond to the assignment’s expectations
• Usually, but not always, one sentence
• Typically appears that the end of the introduction
• More often than not, it is explicitly stated
• Establishes an argument
• Establishes the criteria for scrutiny of the topic (previews the structure of the paper)
• Write for an audience. Your paper should be catchy enough to retain readers’ attention.

Determine a "Research Question"

Determining a research question is a crucial aspect of your writing. In order to stay focused on the assignment, you must form a clear and concise argument. Choose one major idea you want to concentrate on, and expand from there.

When your instructor assigns a paper, try and find some angle that makes you inspired to fulfill the assignment to the best of your abilities. For example, if your history professor assigns you to write about a historical figure who changed the world for the better, write about an individual whose work you can relate to. If you are interested in the supernatural, you could write about Joan of Arc, who became a crusader because of the visions she claimed to have had from God.

Next, ask yourself a series of questions to help form your research question. Try to avoid questions you can answer with “yes” or “no” because these will not allow you to explore your topic as thoroughly or as easily as questions that begin with “who,” “what,” “why,” or “how.”

• When did Joan rise to prominence?
• Did she develop a strong following that her enemies felt threatened by?
• How did her gender play a part in her tragic demise?
• What does Joan’s execution say about female leaders of the 15th century?

Once you have developed a series of questions, consider which questions allow you to form an argument that is not too broad that you cannot write a sufficient paper, but not too narrow that it prevents you from crafting an interesting and compelling piece of writing. Decide which question represents this criteria, then you can start researching. In this case, from the above examples, you may select “How did Joan’s gender play a part in her tragic demise?” This question will allow you to develop a complex thesis with argumentative points to pose to readers. Below is a way to develop a thesis statement from the simply worded question that was just brainstormed.

The answer to your research question can become the core of your thesis statement.

Research Question:

How did Joan of Arc’s gender play a part in her tragic demise?

Thesis Statement:

Joan of Arc’s gender played a significant role in her tragic demise because of the laws and social customs concerning women during France’s 15th century, which included social ideals that perceived women as secular citizens; political standards that favored men to hold positions of power over women; as well as religious ideals that perceived Joan’s alleged clairvoyant gifts as a natural trait of witchcraft, a crime of heresy also associated with women.

Note:  Beginning writers are taught to write theses that list and outline the main points of the paper. As college students, professors might expect more descriptive theses. Doing this will illustrate two points: 1) Readers will be able to isolate your argument, which will keep them more inclined to focus on your points and whether or not they agree with you. They may find themselves questioning their own thoughts about your case. 2) A descriptive thesis serves as a way to show your understanding of the topic by providing a substantial claim.

Troubleshooting your Thesis Statement

The following are some suggestions to help you scrutinize your working draft of your thesis statement to develop it through further revisions.

Specify your details

Example:  In today’s society, beauty advertisements are not mere pictures that promote vanity in the public, but instead, they inspire people to make changes so that they can lead better lifestyles.

• Uses cliché phrases like “In today’s society.”
• What kind of beauty advertisements are you referring to? All of them? Or specific kinds?

Note:  Who is this targeting? Women? Men? Adolescents? Being more specific with the targeted audience is going to strengthen your paper.

Example:  Makeup, clothing, and dieting advertisements endorse American ideals of female beauty and show the public that women should possess full ownership of their bodies and fight the stigma of physical and sexual repression which has been placed upon them.

• Identifies specific forms of beauty advertisements for the sake of clearly expressing a strong argument.
• Uses descriptive language.

Note:  By signifying that women’s beauty is the main topic being argued in the paper, this author clearly identifies their main, targeted audience.

Make arguable claims

Undeveloped.

Example:  Social media is not conducive to people’s personal growth because of the distractions, self-doubt, and social anxiety it can cause to its users.

• “Social media” and “personal growth” both encompass a large span of topics and so they leave the reader confused about the particular focus of this paper.

Note:  The thesis is too broad to form a well-constructed argument. It lacks details and specificity about the paper’s points.

Example:  Although Facebook allows people to network personally and professionally, the procrastination and distraction from one’s demanding responsibilities can lead people to invest more time in narcissistic trivialities, resulting in severe cases of anxiety and low self-esteem.

• It alludes to some kind of counterargument in the opening dependent clause.
• The thesis specifies several points that makes a thesis credible. The argument connects all the points (distractions, self-doubt, and social anxiety) together into one linear train of thought, relating the ideas to one another.

Note:  The thesis is more focused. It concentrates on the idea that social media plays up on a person’s self-worth.

Preview the paper’s structure

Example:  College is a crucial stage in one’s life that will help them become more sophisticated individuals upon entering the harsh world as an adult.

Note:  Not only does this statement lack specificity and excitement, but it fails to present an idea of what the paper will look like, and how the argument is set up. As readers, we know this writer believes college is an imperative part of one’s life, but we have no idea how they are going to go about arguing that claim.

Example:  College is a crucial stage in a young adult’s life because it is the time in which they begin to transition from childhood to adulthood, learn to live away from their parents, budget their own finances, and take responsibility for their successes and failures, which will force them to make more responsible decisions about their lives.

Note:  The thesis points to different aspects of college life that help students ease into adulthood, which shows the reader the points the writer will explore throughout the body of the paper.

• transition from childhood to adulthood
• learn to live away from their parents
• budget their own finances
• take responsibility for their successes and failures

Final Thoughts

When you are asked to write a paper in college, there may not be as many detailed descriptions telling you what subject or argument to write about. Remember, the best way to pick your subject is to write about something that interests you. That way, the assignment will be more promising and passionate for you and may help you feel more in control of your writing.

As you venture closer to crafting your thesis, make sure your subject is narrowed down to a specific enough topic so that you can stay focused on the task. If your topic is specific enough, you will be able to create an argument that is concentrated enough for you to provide sufficient argumentative points and commentary.

The Real Differences Between Thesis and Hypothesis (With table)

A thesis and a hypothesis are two very different things, but they are often confused with one another. In this blog post, we will explain the differences between these two terms, and help you understand when to use which one in a research project.

As a whole, the main difference between a thesis and a hypothesis is that a thesis is an assertion that can be proven or disproven, while a hypothesis is a statement that can be tested by scientific research. 

We probably need to expand a bit on this topic to make things clearer for you, let’s start with definitions and examples.

Definitions

As always, let’s start with the definition of each term before going further.

A thesis is a statement or theory that is put forward as a premise to be maintained or proved. A thesis statement is usually one sentence, and it states your position on the topic at hand.

You may also like:

The best way to understand the slight difference between those terms, is to give you an example for each of them.

If you are writing a paper about the effects of climate change on the environment, your thesis might be “Climate change is causing irreparable damage to our planet, and we must take action to prevent further damage”.

If your hypothesis is correct, then further research should be able to confirm it. However, if your hypothesis is incorrect, research will disprove it. Either way, a hypothesis is an important part of the scientific process.

The word “hypothesis” comes from the Greek words “hupo,” meaning “under”, and “thesis” that we just explained.

Argumentation vs idea

A thesis is usually the result of extensive research and contemplation, and seeks to prove a point or theory.

A hypothesis is only a statement that need to be tested by observation or experimentation.

5 mains differences between thesis and hypothesis

Thesis and hypothesis are different in several ways, here are the 5 keys differences between those terms:

So, in short, a thesis is an argument, while a hypothesis is a prediction. A thesis is more detailed and longer than a hypothesis, and it is based on research. Finally, a thesis must be proven, while a hypothesis does not need to be proven.

Is there a difference between a thesis and a claim?

Is a hypothesis a prediction.

No, a hypothesis is not a prediction. A prediction is a statement about what you think will happen in the future, whereas a hypothesis is a statement about what you think is causing a particular phenomenon.

What’s the difference between thesis and dissertation?

A thesis is usually shorter and more focused than a dissertation, and it is typically achieved in order to earn a bachelor’s degree. A dissertation is usually longer and more comprehensive, and it is typically completed in order to earn a master’s or doctorate degree.

What is a good thesis statement?

I am very curious and I love to learn about all types of subjects. Thanks to my experience on the web, I share my discoveries with you on this site :)

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Thesis and Purpose Statements

Use the guidelines below to learn the differences between thesis and purpose statements.

In the first stages of writing, thesis or purpose statements are usually rough or ill-formed and are useful primarily as planning tools.

A thesis statement or purpose statement will emerge as you think and write about a topic. The statement can be restricted or clarified and eventually worked into an introduction.

As you revise your paper, try to phrase your thesis or purpose statement in a precise way so that it matches the content and organization of your paper.

Thesis statements

A thesis statement is a sentence that makes an assertion about a topic and predicts how the topic will be developed. It does not simply announce a topic: it says something about the topic.

Good: X has made a significant impact on the teenage population due to its . . . Bad: In this paper, I will discuss X.

A thesis statement makes a promise to the reader about the scope, purpose, and direction of the paper. It summarizes the conclusions that the writer has reached about the topic.

A thesis statement is generally located near the end of the introduction. Sometimes in a long paper, the thesis will be expressed in several sentences or an entire paragraph.

A thesis statement is focused and specific enough to be proven within the boundaries of the paper. Key words (nouns and verbs) should be specific, accurate, and indicative of the range of research, thrust of the argument or analysis, and the organization of supporting information.

Purpose statements

A purpose statement announces the purpose, scope, and direction of the paper. It tells the reader what to expect in a paper and what the specific focus will be.

Common beginnings include:

“This paper examines . . .,” “The aim of this paper is to . . .,” and “The purpose of this essay is to . . .”

A purpose statement makes a promise to the reader about the development of the argument but does not preview the particular conclusions that the writer has drawn.

A purpose statement usually appears toward the end of the introduction. The purpose statement may be expressed in several sentences or even an entire paragraph.

A purpose statement is specific enough to satisfy the requirements of the assignment. Purpose statements are common in research papers in some academic disciplines, while in other disciplines they are considered too blunt or direct. If you are unsure about using a purpose statement, ask your instructor.

This paper will examine the ecological destruction of the Sahel preceding the drought and the causes of this disintegration of the land. The focus will be on the economic, political, and social relationships which brought about the environmental problems in the Sahel.

Sample purpose and thesis statements

The following example combines a purpose statement and a thesis statement (bold).

The goal of this paper is to examine the effects of Chile’s agrarian reform on the lives of rural peasants. The nature of the topic dictates the use of both a chronological and a comparative analysis of peasant lives at various points during the reform period. . . The Chilean reform example provides evidence that land distribution is an essential component of both the improvement of peasant conditions and the development of a democratic society. More extensive and enduring reforms would likely have allowed Chile the opportunity to further expand these horizons.

For more tips about writing thesis statements, take a look at our new handout on Developing a Thesis Statement.

Writing Process and Structure

This is an accordion element with a series of buttons that open and close related content panels.

Getting Started with Your Paper

Interpreting Writing Assignments from Your Courses

Generating Ideas for Your Paper

Creating an Argument

Thesis vs. Purpose Statements

Developing a Thesis Statement

Architecture of Arguments

Working with Sources

Quoting and Paraphrasing Sources

Using Literary Quotations

Citing Sources in Your Paper

Drafting Your Paper

Introductions

Paragraphing

Developing Strategic Transitions

Conclusions

Revising Your Paper

Peer Reviews

Reverse Outlines

Revising an Argumentative Paper

Revision Strategies for Longer Projects

Finishing Your Paper

Twelve Common Errors: An Editing Checklist

How to Proofread your Paper

Writing Collaboratively

Collaborative and Group Writing

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Perspective

T.d. lee changed science in china and my life. this is what i owe to him.

Yangyang Cheng

Tsung-Dao Lee and Chen Ning Yang, winners of the Nobel Prize in physics in 1957. Both were affiliated with the Institute for Advanced Study at the time of the award. Alan Richards/Institute for Advanced Study hide caption

Yangyang Cheng is a particle physicist and a research scholar in law and fellow at Yale Law School’s Paul Tsai China Center, where her work focuses on the development of science and technology in China and U.S.-China relations.

In 1974, Tsung-Dao (T.D.) Lee visited a dance academy in Shanghai and came up with an idea: shao nian ban , the Special Class for the Gifted Young. Thirty years later, I studied physics in China at the program Lee had conceived. For generations of Chinese scientists including myself, we owe much of our careers to Lee, not just for his contributions to particle physics, but also for his unparalleled efforts in advancing higher education in China and facilitating U.S.-China scientific exchange. A professor emeritus at Columbia University and one of the first two Chinese-born Nobel laureates, Lee passed away on Aug. 4. He was 97.

Driven by an insatiable curiosity, an eye for beauty and a deep love for humanity, Lee’s work probed the mysteries of the universe and illuminated the intricate relations between science and the state. His legacy holds rich lessons and leaves many questions on how nature works and how scientists should fulfill their civic duties.

Nobel Prize-winning physicist Tsung-Dao Lee has died at age 97

Born in Shanghai in 1926, Lee moved to the United States in 1946 for graduate studies. The two world wars had ushered in a golden era for physics, thanks to the discipline’s military and industrial applications. The Nationalist government of China selected a small group of students to learn nuclear technology from the U.S., China’s World War II ally. Lee and his schoolmate Zhu Guangya were the two physicists in the group. U.S. authorities prohibited sharing knowledge about the atomic bomb, and the Chinese students pursued fundamental science instead. Zhu went to the University of Michigan and Lee to the University of Chicago. Both graduated in 1950, shortly after the Communists won the civil war in China and the Nationalists retreated to Taiwan. Zhu returned to his birth country and later became a leader in China’s nuclear weapons program. Lee stayed in the U.S., where he continued on a promising path in theoretical astrophysics and particle physics.

In 1956, Lee and his colleague Chen Ning Yang, a fellow Chinese graduate of the University of Chicago, proposed novel methods to examine “parity violation,” where the universe’s mirror reflection behaves differently from the original in certain cases. Their theory was experimentally proven , first by Chinese American physicist Chien-Shiung (C.S.) Wu and her team and soon by others, and the duo were awarded the Nobel Prize in physics the following year. The Cold War elevated this breakthrough in fundamental science to geopolitical significance. Authorities in Washington, Taipei and Beijing all tried to claim the accomplishment as a point of national pride.

Lee and Yang’s work overturned long-held assumptions about a basic tenet of the universe and countered racial discrimination against Chinese scientists in the West. The concept of parity violation also served an unexpected ideological purpose in Mao Zedong’s China. At the time, many scientists were persecuted in China when their work was deemed contradictory to the Communist Party’s doctrine, but the party embraced Lee and Yang’s theory, not just for the pair’s Chinese heritage. Mao and his followers argued that if a basic symmetry of the universe is in fact broken, this was proof that nothing is permanent and anything could be changed through mass struggle. In 1966, fearing stagnation in society and the waning of his reign, Mao launched the Cultural Revolution and plunged his country into chaos. Schools were suspended. Intellectuals were forced into reeducation through hard labor.

Physics professor Chien-Shiung Wu in a laboratory at Columbia University in 1958. Wu became the first woman to win the Research Corporation Award after providing the first experimental proof, along with scientists from the National Bureau of Standards, that the principle of parity conservation does not hold in weak subatomic interactions. Bettmann Archive/Getty Images hide caption

But as U.S.-China relations thawed over shared concerns over the Soviet Union, Lee was finally able to visit his homeland in 1972, shortly after President Richard Nixon’s icebreaking trip. It was Lee’s first time back in 26 years. He witnessed the devastations wrought by political fanaticism, and advocated for basic research in meetings with Chinese leaders. But convincing radical wings within the party was no easy feat.

Nixon's trip to China laid the groundwork for normalizing U.S.-China relations

On his second visit in 1974, a tour of the Shanghai Ballet Academy sparked an idea. Lee noticed that the dancers began training at an early age and were spared from hard labor. He immediately penned a letter to Chinese authorities and raised this tentative proposal: “Though basic science is very different from dancing, could some similar methods be adopted in the selection and training of scientists?” Lee asked his old friend Zhu to deliver the letter to Premier Zhou Enlai, who passed it on to Mao.

A few days later, on May 30, 1974, Lee was summoned to a one-on-one meeting with Mao. Lee recounted the experience in a subsequent essay . “Tell me, why is symmetry of importance?” the chairman asked. Lee picked up a pencil from the table and rolled it back and forth across a notepad, as he explained to Mao how a dynamic process could also embody a higher order of symmetry. The conversation shifted from the laws of nature to the affairs of humans, and Lee was able to gain Mao’s approval for a gifted youth program in the sciences.

A Physics Legend Part Two: Chien-Shiung Wu's Granddaughter Reflects

Political uncertainties halted the implementation. It was not until 1978, two years after Mao's death and the end of the Cultural Revolution, that the inaugural cohort of the Special Class for the Gifted Young were admitted to the University of Science and Technology of China (USTC) in Hefei, a city in central China. The students were selected from across the country. All must be 15 or younger. The purpose of the program was much more than providing an elite college education for a small group of teens: its establishment was an important political signal from a new generation of Chinese leadership, who sought science and technology for national renewal.

When my classmates and I arrived at USTC in 2005, Lee’s handwritten commemorative note greeted us by the entrance of the Gifted Young Building: “It is up to the youth to create.” Bulletin boards showcased the achievements of famous alumni, including prominent scientists, tech executives and a few who made their fortunes on Wall Street. Our teachers took care to shield us from public fascination with the notion of “prodigy”; a few years of age difference was nothing to dwell on. As Lee reflected in an essay on the program’s 27th anniversary, the real goal of his initial proposal was not to devise a gifted youth class per se, but to instigate an opening, to forge an opportunity for science education amid political turmoil. The program was a product of its time; its specificities, including the age requirement, were persuasion tactics that reflected Lee’s impressive political acumen.

As an unofficial adviser to the Chinese government and a scientific ambassador between his birth country and his adopted home, Lee was instrumental in a wide range of education and exchange programs in China. The China-U.S. Physics Examination and Application ( CUSPEA ) program, initiated and managed by Lee, provided one of the first pathways for Chinese students to attend graduate school in the U.S. in the post-Mao era.

Lee was also one of the earliest and most important proponents of the Beijing Electron-Positron Collider, China’s first and only high-energy particle collider experiment. This October marks the 40th anniversary of the facility’s groundbreaking. China’s leader Deng Xiaoping took part in the ceremony and gave the project his personal blessing. The Chinese collider also received significant external support, especially from the U.S. After several upgrades , the experiment is still going and maintains a vibrant international collaboration.

Yangyang Cheng graduated from the University of Science and Technology of China's Special Class for the Gifted Young in 2009, where she majored in physics. Yangyang Cheng hide caption

I completed my undergraduate thesis on this experiment and came to the U.S. in 2009 to pursue my Ph.D. in physics at the University of Chicago, Lee’s alma mater. The wall outside the department’s administrative office was adorned with a long row of portraits, featuring Nobel laureates who had called the institution home. Among them were Lee's and Yang's. The first time I stood in front of their photos felt like a pilgrimage.

I never had the chance to meet Lee in person, but his presence always felt near. I came across his name in papers and textbooks. My doctoral adviser worked on CUSPEA admissions in the 1980s. My colleagues who went to graduate school during that time would bring up how good their Chinese classmates were: After passing CUSPEA, homework was a piece of cake!

In its decade-long run since 1979, nearly a thousand Chinese physicists were able to study in the U.S. through CUSPEA. Many became leaders in their fields. As higher education in China recovered from Mao-era disasters and students there could apply to American schools directly, the last class of CUSPEA students was admitted in 1989.

Year of Global Elections

Tim walz made an impression in china, students and teachers say.

That June, when tanks rolled into Tiananmen Square to crush the student-led pro-democracy movement, Lee was hosting an international physics symposium in Beijing. He arranged for the safe departure of the attendees, and dedicated the conference proceedings , published in the following year, to the victims of Tiananmen: “many were idealistic and innocent.” In response to the atrocity, many academic organizations in the U.S. suspended collaborations with China. Some scientists advocated for a sustained boycott.

For three months after the massacre, Deng disappeared from public view. When the Chinese leader stepped in front of the cameras again in September, Lee was by his side. The two shook hands and spoke at length. A photo of them smiling together appeared on the front page of The New York Times .

The Picture Show

Rare photos and accounts from china's tiananmen square protests.

Lee’s meeting with Deng led to much critique from the scientific community. The esteemed physicist had lent his reputation to a brutal leader and helped restore the latter’s image. In a letter to his colleague Stanley Deser, who had attended the June symposium in Beijing and witnessed the carnage, Lee explained that he had approached the Chinese leadership with three requests — publish the casualty list, grant amnesty to the student protesters and offer support for the victims and their families — and received positive responses to all of them. “I am happy that, in spite of the turmoil, this year’s 74 new CUSPEA students were all allowed to come to this country,” Lee added.

A month after he sat next to Deng, Lee met with President George H. W. Bush to convey reconciliatory messages from the Chinese leader.

Thirty-five years after the bloodshed at Tiananmen, Chinese authorities have not fulfilled their promises of transparency or leniency. I wonder if Lee regretted his actions. As I reflect on this episode in his otherwise unimpeachable career, what really pains me is the thought that Lee had anticipated betrayal from the Chinese government and professional repercussions in the U.S., but believed he had to try anyway. He had a long, successful record in advising Chinese officials, but only when his and the state's objectives were aligned.

Beijing adopted Lee’s suggestions on advancing science and technology to strengthen its own power, but the state would not yield on issues that challenged its rule. The tragedy in Lee’s choices after Tiananmen exposed the limits of elite persuasion as a vehicle for change: To gain a seat at the table, one must accept the rules of the house. Even for a mind as brilliant as Lee’s, perhaps it was easier to propose breaking the symmetry of the universe than to imagine alternative governance in China.

From left: Chen Ning Yang of the Institute for Advanced Study; Daniel Bovet of Rome; Tsung-Dao Lee of Columbia University; Alexander Todd of Cambridge University, England; and Albert Camus, of France. All are shown after receiving Nobel Prizes in Stockholm, Sweden, Dec. 10, 1957. File photo/AP hide caption

At the end of his letter to Deser, Lee emphasized the importance of keeping contact with Chinese colleagues: “Only then can we hope to be helpful to them in a genuine way.” Lee’s position echoed that of Bush. The president had been eager to restore U.S.-China relations in the aftermath of Tiananmen, despite congressional pressure for tougher sanctions and moral outrage from the American public, and saw meeting with Lee as conducive to this goal.

But do better bilateral relations always benefit the people in either country? Maintaining dialogue without setting conditions or applying leverage can easily slip into acquiescence. To uphold the “universality of science and the free exchange between scientists of all nations,” as Lee put it , might be a worthy aspiration, but to mistake such cosmopolitan ideals as reality overlooks the political incentive, historical context and social conditions behind knowledge production, as well as the power structures that enable or prohibit the movement of people and ideas. The very political nature of science and scientific exchange has been evident throughout Lee’s education and career. Science is never innocent, even when scientists try their best to be.

When physicist C.S. Wu died in 1997, Lee penned a moving essay recounting her illustrious life and their fruitful collaboration, culminating in the Nobel-winning discovery. In closing, Lee quoted what Albert Einstein had said in memory of Marie Curie: “At a time when a towering personality has come to the end of her life, let us not merely rest content with recalling what she has given to mankind in the fruits of her work. It is the moral qualities of its leading personalities that are perhaps of even greater significance for a generation and for the course of history…” Einstein, as Lee cited, went on to praise Curie’s “strength” and her “purity of will.”

These words, Lee wrote, were “the most fitting” to describe Wu, and I think they also apply to Lee. He embodied the best of both countries he called home and confronted some of their worst elements. He worked to distill the complexity of nature into fundamental principles and sought a higher unity that could transcend divisions. With the purity of will, he revealed the beauty of the world as well as its brokenness. The quest to decipher the universe and achieve better governance on Earth remains unfinished. Lee has done more than his share and deserves his rest. It is now up to us.

• particle physics
• Nobel Prize in physics
• U.S. and China