When you know the answer you want, it is often all too easy to figure out a way of getting it.

The number of e-mails and letters that I get from choreographers, from sculptors, from composers who are being inspired by science is huge.

...things are the way they are in our universe because if they weren't, we wouldn't be here to notice.

I like to think that Einstein would look at string theory’s journey and smile, enjoying the theory’s remarkable geometrical features while feeling kinship with fellow travelers on the long and winding road toward unification.

Assessing existence while failing to embrace the insights of modern physics would be like wrestling in the dark with an unknown opponent.

Gravity is matter’s sugar daddy.

Einstein's theory of relativity does a fantastic job for explaining big things. Quantum mechanics is fantastic for the other end of the spectrum - for small things.