A model is done when nothing else can be taken out.

Do not imagine that you have to know everything before you can do anything. My own best work was done when I was most ignorant.

That was the wonderful thing about Ramanujan. He discovered so much, and yet he left so much more in his garden for other people to discover.

Almost everything about the universe is astounding. I think the most amazing thing is how gifted we are - we are only monkeys who came down from the trees just recently. We have these amazing gifts of music and mathematics and painting and Olympic running.

Every orchid or rose or lizard or snake is the work of a dedicated and skilled breeder. There are thousands of people, amateurs and professionals, who devote their lives to this business. Now imagine what will happen when the tools of genetic engineering become accessible to these people.

The pain of childbirth is not remembered. It's the child that's remembered.

I have the freedom to do what I want... bright people to talk to every day.