258 Quotes by Brian Greene

For string theory to make sense, the universe should have nine spacial dimensions and one time dimension, for a total of ten dimensions.

Physics grapples with the largest questions the universe presents. ‘Where did the totality of reality come from?’ ‘Did time have a beginning?’

I think math is a hugely creative field, because there are some very well-defined operations that you have to work within. You are, in a sense, straightjacketed by the rules of the mathematics. But within that constrained environment, it’s up to you what you do with the symbols.

It’s hard to teach passionately about something that you don’t have a passion for.

Most scientists like to operate in the context of economy. If you don’t need an explanatory principle, don’t invoke it.

No matter how hard you try to teach your cat general relativity, you’re going to fail.

Black holes, we all know, are these regions where if an object falls in, it can’t get out, but the puzzle that many struggled with over the decades is, what happens to the information that an object contains when it falls into a black hole. Is it simply lost?

For me it’s been very exciting to contribute to the public’s understanding of how rich and wondrous science is.

The revelation we’ve come to is that we can trust our memories of a past with lower, not higher, entropy only if the big bang – the process, event, or happening that brought the universe into existence – started off the universe in an extraordinarily special, highly ordered state of low entropy.