Although it is uncertain, it is necessary to make science useful. Science is only useful if it tells you about some experiment that has not been done; it is not good if it only tells you what just went on.

Study hard what interests you the most in the most undisciplined, irreverent and original manner possible.

Everything is made of atoms.

Some people say, "How can you live without knowing?" I do not know what they mean. I always live without knowing. That is easy. How you get to know is what I want to know.

[B]eyond poverty, beyond the point that the material needs are reasonably satisfied, only from within is peace.

You do not know anything until you have practiced.

We are trying to prove ourselves wrong as quickly as possible, because only in that way can we find progress.