The real problem is in the hearts and minds of men. It is not a problem of physics but of ethics. It is easier to denature plutonium than to denature the evil spirit of man.

Study and, in general, the pursuit of truth and beauty is the sphere in which we are permitted to remain children all our lives." "Study and, in general, the pursuit of truth and beauty is the sphere in which we are permitted to remain children all our lives.

Science is the attempt to make the chaotic diversity of our sense-experience correspond to a logically uniform system of thought.

Do things sound better in your head before you say them, or do you even run them through there first?

What I see in Nature is a magnificent structure that we can comprehend only very imperfectly, and that must fill a thinking person with a feeling of humility. This is a genuinely religious feeling that has nothing to do with mysticism.

Necessity is the mother of all invention.

How I wish that somewhere there existed an island for those who are wise and of good will.