If I had an hour to solve a problem I'd spend 55 minutes thinking about the problem and 5 minutes thinking about solutions.

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.

When you look at yourself from a universal standpoint, something inside always reminds or informs you that there are bigger and better things to worry about.

If I can't picture it, I can't understand it.

(Reply on what constitutes scientific proof:)"The question is much too difficult for me.

I do not believe in the God of theology who rewards good and punishes evil.

War cannot be humanized. It can only be abolished.