String theory Quote by Brian Greene

As of now, string theorists have no explanation of why there are three large dimensions as well as time, and the other dimensions are…

— Edward Witten

“I think string theory provides an explanation.” “Some think that it is only when two strings encounter each other and some qualities are canceled…

— Liu Cixin

As you say, the way string theory requires all these extra dimensions and this comes from certain consistency requirements about how string should behave…

— Roger Penrose

“Extending Polyakov's argument, he found evidence that the string theory describing those emergent strings is actually a ten-dimensional supersymmetric string theory. Of the nine…

— Lee Smolin

String theory is not the only theory that can accommodate extra dimensions, but it certainly is the one that really demands and requires it.

— Brian Greene

One of the strangest features of string theory is that it requires more than the three spatial dimensions that we see directly in the…

— Brian Greene

String theory envisions a multiverse in which our universe is one slice of bread in a big cosmic loaf. The other slices would be…

— Brian Greene

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…

— Edward Witten

“Removing zero from the universe might seem like a drastic step, but strings are much more tractable than dots; by eliminating zero, string theory…

— Charles Seife

Having those extra dimensions and therefore many ways the string can vibrate in many different directions turns out to be the key to being…

— Edward Witten

To the extent that we even understand string theory, it may imply a massive number of possible different universes with different laws of physics…

— Lawrence M. Krauss

“There are really four dimensions, three which we call the three planes of Space, and a fourth, Time.”

— H.G. Wells