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    edward witten Quotes

    I wouldn't have thought that a wrong theory should lead us to understand better the ordinary quantum field theories or to have new insights about the quantum states of black holes.
    — Edward Witten
    tags: thoughts  wrong  insight  black 
     
    String theory is 21 st century physics that fell accidentally into the 20th century.
    — Edward Witten
    tags: physics 
     
    You enter a completely new world where things aren't at all what you're used to.
    — Edward Witten
    tags: world 
     
    The theory has to be interpreted that extra dimensions beyond the ordinary four dimensions the three spatial dimensions plus time are sufficiently small that they haven't been observed yet.
    — Edward Witten
    tags: time 
     
    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 it has to do with the fuzziness it introduces.
    — Edward Witten
    If I take the theory as we have it now, literally, I would conclude that extra dimensions really exist. They're part of nature. We don't really know how big they are yet, but we hope to explore that in various ways.
    — Edward Witten
    tags: nature  hope 
     
    M stands for Magic, Mystery, or Matrixaccording to taste
    — Edward Witten
    tags: magic  mystery 
     
    As far as extra dimensions are concerned, very tiny extra dimensions wouldn't be perceived in everyday life, just as atoms aren't: we see many atoms together but we don't see atoms individually.
    — 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.
    — Edward Witten
    tags: beauty  music 
     
    One very important aspect of string theory is definitely testable. That was the prediction of supersymmetry, which emerged from string theory in the early '70s.
    — Edward Witten
    I have a much easier time imagining how we would understand the big bang, even though we can't do it yet, than I can imagine understanding consciousness.
    — Edward Witten
    String theory is an attempt at a deeper description of nature by thinking of an elementary particle not as a little point but as a little loop of vibrating string.
    — Edward Witten
    tags: nature  thinking 
     
    So when you ask me how string theory might be tested, I can tell you what's likely to happen at accelerators or some parts of the theory that are likely to be tested.
    — 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 particle is replaced by a string, which is more spread out.
    — Edward Witten
    tags: physics 
     
    As of now, string theorists have no explanation of why there are three large dimensions as well as time, and the other dimensions are microscopic. Proposals about that have been all over the map.
    — Edward Witten
    tags: time 
     
    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 you bend it or stretch it as long as you don't break anything.
    — Edward Witten
    tags: space  property 
     
    But the beauty of Einstein's equations, for example, is just as real to anyone who's experienced it as the beauty of music. We've learned in the 20th century that the equations that work have inner harmony.
    — Edward Witten
    tags: beauty  work  real  harmony  music  example 
     
    I just think too many nice things have happened in string theory for it to be all wrong. Humans do not understand it very well, but I just dont believe there is a big cosmic conspiracy that created this incredible thing that has nothing to do with the real world.
    — Edward Witten
    tags: world  believe  wrong  real 
     
    We know a lot of things, but what we don't know is a lot more.
    — Edward Witten
    I have a tendency, more than most other physicists, to try to figure out everything all at once, before I publish. And even to try to figure out everything in my head, without pencil and paper.
    — 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 with the most generality and the greatest simplicity are very elegant and subtle.
    — Edward Witten
    Im actually, for the most part, a complete agnostic politically.
    — Edward Witten
    There is a difference between knowing what is true and knowing why it is true
    — Edward Witten
    tags: true  knowing 
     
    As for the forces, electromagnetism and gravity we experience in everyday life. But the weak and strong forces are beyond our ordinary experience. So in physics, lots of the basic building blocks take 20th- or perhaps 21st-century equipment to explore.
    — Edward Witten
    1/r^2 has a nasty singularity at r=0, but it did not bother Newton-the Moon is far enough.
    — Edward Witten
    tags: moon 
     
    There was a long history of speculation that in quantum gravity, unlike Einstein's classical theory, it might be possible for the topology of spacetime to change.
    — Edward Witten
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