The greater the doubt, the greater the awakening

What use are socks? They only produce holes.

Reason is intuition's servant.

When the Special Theory of Relativity began to germinate in me, I was visited by all sorts of nervous conflicts... I used to go away for weeks in a state of confusion.

Only the one who does not question is safe from making a mistake.

The time comes in life when we have read enough. It's time to stop reading. It's time to lay down the books and write.

My relationship to the Jewish people has become my strongest human bond, ever since I became fully aware of our precarious situation among the nations of the world.