---
title: "23 Theory Quotes By Edward Witten"
description: "23 Theory quotes by Edward Witten. Plus more from Edward Witten and more Theory sayings from other authors."
image: "https://sms4smile.com/quotes/i/56b/edward-witten-16242_came_it-s-an-exaggeration-to-say-that-i-came_3180093.png"
---

> [It's an exaggeration to say that I came up with M-theory.](https://sms4smile.com/quotes/edward-witten/it-s-an-exaggeration-to-say-that-i-came-up-with-m-theory/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

[Image](https://sms4smile.com/quotes/i/56b/edward-witten-16242_came_it-s-an-exaggeration-to-say-that-i-came_3180093.png)

> [String theory is 21 st century physics that fell accidentally into the 20th century.](https://sms4smile.com/quotes/edward-witten/string-theory-is-21-st-century-physics-that-fell-accidentally-into/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

[Image](https://sms4smile.com/quotes/i/b9a/edward-witten-16242_20th-century_string-theory-is-21-st-century-physics-t_2536287.png)

> [String theory is an attempt at a deeper description of nature by thinking of an elementary particle not as a little point…](https://sms4smile.com/quotes/edward-witten/string-theory-is-an-attempt-at-a-deeper-description-of-nature-by/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

[Image](https://sms4smile.com/quotes/i/2c6/edward-witten-16242_deeper_string-theory-is-an-attempt-at-a-deeper_2933445.png)

> [One very important aspect of string theory is definitely testable. That was the prediction of supersymmetry, which emerged from string theory in…](https://sms4smile.com/quotes/edward-witten/one-very-important-aspect-of-string-theory-is-definitely-testable/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

[Image](https://sms4smile.com/quotes/i/d9a/edward-witten-16242_aspect_one-very-important-aspect-of-string-theo_2403597.png)

> [It's indeed surprising that replacing the elementary particle with a string leads to such a big change in things. I'm tempted to…](https://sms4smile.com/quotes/edward-witten/it-s-indeed-surprising-that-replacing-the-elementary-particle-with-a/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

[Image](https://sms4smile.com/quotes/i/0d9/edward-witten-16242_change_it-s-indeed-surprising-that-replacing-th_1506508.png)

> [The theory has to be interpreted that extra dimensions beyond the ordinary four dimensions the three spatial dimensions plus time are sufficiently…](https://sms4smile.com/quotes/edward-witten/the-theory-has-to-be-interpreted-that-extra-dimensions-beyond-the/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

[Image](https://sms4smile.com/quotes/i/1c0/edward-witten-16242_dimensions_the-theory-has-to-be-interpreted-that-ex_145076.png)

> [On the other hand, we don't understand the theory too completely, and because of this fuzziness of spacetime, the very concept of…](https://sms4smile.com/quotes/edward-witten/on-the-other-hand-we-don-t-understand-the-theory-too-completely-and/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

[Image](https://sms4smile.com/quotes/i/c9f/edward-witten-16242_dimensions_on-the-other-hand-we-don-t-understand-th_524074.png)

> [Spreading out the particle into a string is a step in the direction of making everything we're familiar with fuzzy. You enter…](https://sms4smile.com/quotes/edward-witten/spreading-out-the-particle-into-a-string-is-a-step-in-the-direction/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

[Image](https://sms4smile.com/quotes/i/610/edward-witten-16242_direction_spreading-out-the-particle-into-a-string_2754964.jpg)

> [If I take the theory as we have it now, literally, I would conclude that extra dimensions really exist. They're part of…](https://sms4smile.com/quotes/edward-witten/if-i-take-the-theory-as-we-have-it-now-literally-i-would-conclude/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

[Image](https://sms4smile.com/quotes/i/598/edward-witten-16242_dimensions_if-i-take-the-theory-as-we-have-it-now-l_1757615.png)

> [You have that one basic string, but it can vibrate in many ways. But we're trying to get a lot of particles…](https://sms4smile.com/quotes/edward-witten/you-have-that-one-basic-string-but-it-can-vibrate-in-many-ways-but-we/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

[Image](https://sms4smile.com/quotes/i/041/edward-witten-16242_because_you-have-that-one-basic-string-but-it-ca_2650150.png)

> [Technically you need the extra dimensions. At first people didn't like them too much, but they've got a big benefit, which is…](https://sms4smile.com/quotes/edward-witten/technically-you-need-the-extra-dimensions-at-first-people-didn-t-like/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

[Image](https://sms4smile.com/quotes/i/afd/edward-witten-16242_ability_technically-you-need-the-extra-dimension_933749.jpg)

> [Even before string theory, especially as physics developed in the 20th century, it turned out that the equations that really work in…](https://sms4smile.com/quotes/edward-witten/even-before-string-theory-especially-as-physics-developed-in-the-20th/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

[Image](https://sms4smile.com/quotes/i/ec5/edward-witten-16242_20th-century_even-before-string-theory-especially-as_1319763.png)

> [Quantum mechanics brought an unexpected fuzziness into physics because of quantum uncertainty, the Heisenberg uncertainty principle. String theory does so again because…](https://sms4smile.com/quotes/edward-witten/quantum-mechanics-brought-an-unexpected-fuzziness-into-physics/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

[Image](https://sms4smile.com/quotes/i/206/edward-witten-16242_doe_quantum-mechanics-brought-an-unexpected_1645174.png)

> [I just think too many nice things have happened in string theory for it to be all wrong. Humans do not understand…](https://sms4smile.com/quotes/edward-witten/i-just-think-too-many-nice-things-have-happened-in-string-theory-for/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

[Image](https://sms4smile.com/quotes/i/aff/edward-witten-16242_believe_i-just-think-too-many-nice-things-have-h_1360270.png)

> [As for the forces, electromagnetism and gravity we experience in everyday life. But the weak and strong forces are beyond our ordinary…](https://sms4smile.com/quotes/edward-witten/as-for-the-forces-electromagnetism-and-gravity-we-experience-in/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

[Image](https://sms4smile.com/quotes/i/1de/edward-witten-16242_building_as-for-the-forces-electromagnetism-and-g_7799.png)

> [Superstring theories provide a framework in which the force of gravity may be united with the other three forces in nature: the…](https://sms4smile.com/quotes/edward-witten/superstring-theories-provide-a-framework-in-which-the-force-of/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

[Image](https://sms4smile.com/quotes/i/55d/edward-witten-16242_candidates_superstring-theories-provide-a-framework_1801491.png)

> [Quantum mechanics brought an unexpected fuzziness into physics because of quantum uncertainty, the Heisenberg uncertainty principle.](https://sms4smile.com/quotes/edward-witten/quantum-mechanics-brought-an-unexpected-fuzziness-into-physics-2/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

[Image](https://sms4smile.com/quotes/i/7d4/edward-witten-16242_physics_quantum-mechanics-brought-an-unexpected_2440869.png)

> [There was a long history of speculation that in quantum gravity, unlike Einstein's classical theory, it might be possible for the topology…](https://sms4smile.com/quotes/edward-witten/there-was-a-long-history-of-speculation-that-in-quantum-gravity/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

[Image](https://sms4smile.com/quotes/i/6fb/edward-witten-16242_change_there-was-a-long-history-of-speculation_1701876.jpg)

> [So when you ask me how string theory might be tested, I can tell you what's likely to happen at accelerators or…](https://sms4smile.com/quotes/edward-witten/so-when-you-ask-me-how-string-theory-might-be-tested-i-can-tell-you/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

[Image](https://sms4smile.com/quotes/i/7cf/edward-witten-16242_i-can_so-when-you-ask-me-how-string-theory-mig_1922733.png)

> [I wouldn't have thought that a wrong theory should lead us to understand better the ordinary quantum field theories or to have…](https://sms4smile.com/quotes/edward-witten/i-wouldn-t-have-thought-that-a-wrong-theory-should-lead-us-to/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

[Image](https://sms4smile.com/quotes/i/a28/edward-witten-16242_black_i-wouldn-t-have-thought-that-a-wrong-the_1713110.png)

> [As of now, string theorists have no explanation of why there are three large dimensions as well as time, and the other…](https://sms4smile.com/quotes/edward-witten/as-of-now-string-theorists-have-no-explanation-of-why-there-are-three/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

[Image](https://sms4smile.com/quotes/i/807/edward-witten-16242_dimensions_as-of-now-string-theorists-have-no-expla_602253.png)

> [In Einstein's general relativity the structure of space can change but not its topology. Topology is the property of something that doesn't…](https://sms4smile.com/quotes/edward-witten/in-einstein-s-general-relativity-the-structure-of-space-can-change/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

[Image](https://sms4smile.com/quotes/i/e77/edward-witten-16242_break_in-einstein-s-general-relativity-the-str_1071377.png)

> [Having those extra dimensions and therefore many ways the string can vibrate in many different directions turns out to be the key…](https://sms4smile.com/quotes/edward-witten/having-those-extra-dimensions-and-therefore-many-ways-the-string-can/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

[Image](https://sms4smile.com/quotes/i/c5b/edward-witten-16242_being_having-those-extra-dimensions-and-theref_1226080.png)

## Other authors on Theory

## More by Edward Witten

> [As for the forces, electromagnetism and gravity we experience in everyday life. But the weak and strong forces are beyond our ordinary experience. So…](https://sms4smile.com/quotes/edward-witten/as-for-the-forces-electromagnetism-and-gravity-we-experience-in/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

> [I'm actually, for the most part, a complete agnostic politically.](https://sms4smile.com/quotes/edward-witten/i-m-actually-for-the-most-part-a-complete-agnostic-politically/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

> [“If one of the five theories describes our univers, who lives in the other four worlds”](https://sms4smile.com/quotes/edward-witten/if-one-of-the-five-theories-describes-our-univers-who-lives-in-the/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

> [The theory has to be interpreted that extra dimensions beyond the ordinary four dimensions the three spatial dimensions plus time are sufficiently small that…](https://sms4smile.com/quotes/edward-witten/the-theory-has-to-be-interpreted-that-extra-dimensions-beyond-the/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

> [You enter a completely new world where things aren't at all what you're used to.](https://sms4smile.com/quotes/edward-witten/you-enter-a-completely-new-world-where-things-aren-t-at-all-what-you/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

> [On the other hand, we don't understand the theory too completely, and because of this fuzziness of spacetime, the very concept of spacetime and…](https://sms4smile.com/quotes/edward-witten/on-the-other-hand-we-don-t-understand-the-theory-too-completely-and/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

> [As of now, string theorists have no explanation of why there are three large dimensions as well as time, and the other dimensions are…](https://sms4smile.com/quotes/edward-witten/as-of-now-string-theorists-have-no-explanation-of-why-there-are-three/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

> [Technically you need the extra dimensions. At first people didn't like them too much, but they've got a big benefit, which is that the…](https://sms4smile.com/quotes/edward-witten/technically-you-need-the-extra-dimensions-at-first-people-didn-t-like/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

> [In Einstein's general relativity the structure of space can change but not its topology. Topology is the property of something that doesn't change when…](https://sms4smile.com/quotes/edward-witten/in-einstein-s-general-relativity-the-structure-of-space-can-change/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

> [Having those extra dimensions and therefore many ways the string can vibrate in many different directions turns out to be the key to being…](https://sms4smile.com/quotes/edward-witten/having-those-extra-dimensions-and-therefore-many-ways-the-string-can/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

> [Even before string theory, especially as physics developed in the 20th century, it turned out that the equations that really work in describing nature…](https://sms4smile.com/quotes/edward-witten/even-before-string-theory-especially-as-physics-developed-in-the-20th/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

> [I just think too many nice things have happened in string theory for it to be all wrong. Humans do not understand it very…](https://sms4smile.com/quotes/edward-witten/i-just-think-too-many-nice-things-have-happened-in-string-theory-for/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

> [It's indeed surprising that replacing the elementary particle with a string leads to such a big change in things. I'm tempted to say that…](https://sms4smile.com/quotes/edward-witten/it-s-indeed-surprising-that-replacing-the-elementary-particle-with-a/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

> [One of the basic things about a string is that it can vibrate in many different shapes or forms, which gives music its beauty.](https://sms4smile.com/quotes/edward-witten/one-of-the-basic-things-about-a-string-is-that-it-can-vibrate-in-many/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

> [Quantum mechanics brought an unexpected fuzziness into physics because of quantum uncertainty, the Heisenberg uncertainty principle. String theory does so again because a point…](https://sms4smile.com/quotes/edward-witten/quantum-mechanics-brought-an-unexpected-fuzziness-into-physics/)

[Edward Witten](https://sms4smile.com/quotes/author/edward-witten/)

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