A philosopher once said, 'It is necessary for the very existence of science that the same conditions always produce the same results.' Well, they don't!

Our responsibility is to do what we can, learn what we can, improve the solutions, and pass them on.

All theoretical chemistry is really physics; and all theoretical chemists know it.

If you keep proving stuff that others have done, getting confidence, increasing the complexities of your solutions - for the fun of it - then one day you'll turn around and discover that nobody actually did that one! And that's the way to become a computer scientist.

Tell your son to stop trying to fill your head with science - for to fill your heart with love is enough!

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

The unanswerable mysteries... the attitude that all is uncertain... to summarize it - the humility of the intellect.