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

I want to know what God thinks. The rest are details.

The pursuit of truth and beauty is a sphere of activity in which we are permitted to remain children all our lives.

I never thought that others would take my theories so much more seriously than I did.

I came- though the child of entirely irreligious (Jewish) parents - to a deep religiousness, which, however, reached an abrupt end at the age of twelve.

If you have never failed, you have never tried anything new.

There is no salvation for civilization, or even the human race, other than the creation of a world government.