#in

When you're young, you don't think very far ahead. You just think in terms of the next day, the next week, the next competition. You don't think about injuries that could threaten your long-term health. ↗

— Katarina Witt

#ahead #competition #could #day #far

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

#beyond #blocks #building #building blocks #equipment

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

#anyone #beauty #century #einstein #equations

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

#better #black #black holes #field #holes

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

#atoms #concerned #dimensions #everyday #everyday life

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 spacetime dimensions isn't precisely defined. ↗

— Edward Witten

#completely #concept #defined #dimensions #fuzziness

Quantum mechanics brought an unexpected fuzziness into physics because of quantum uncertainty, the Heisenberg uncertainty principle. ↗

— Edward Witten

#brought #fuzziness #into #mechanics #physics

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

#happen #how #i #i can #likely

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

#classical #einstein #gravity #history #long

A serious and good philosophical work could be written consisting entirely of jokes. ↗

— Ludwig Wittgenstein

#could #entirely #good #jokes #philosophical