If we don't play God, who will?

The way to do great science is to stay away from subjects that are overpopulated, and go to the frontiers.

No good model ever accounted for all the facts, since some data was bound to be misleading if not plain wrong.

I have a son, who is a... not an ordinary form of schizophrenia, but clearly, cannot take care of himself. And the great fear of then, of all parents is, when the parents die, who takes care of your child? And the answer is: they become homeless.

The brain is the last and grandest biological frontier, the most complex thing we have yet discovered in our universe. It contains hundreds of billions of cells interlinked through trillions of connections. The brain boggles the mind.

The luckiest thing that ever happened to me was that my father didn't believe in God, and so he had no hang-ups about souls.

For all my life, America was the place to be. And we somehow continue to be the place where there are real opportunities to change the world for the better.