One has a feeling that one has a kind of home in this timeless community of human beings that strive for truth. ... I have always believed that Jesus meant by the Kingdom of God the small group scattered all through time of intellectually and ethically valuable people.

When forced to summarize the general theory of relativity in one sentence: Time and space and gravitation have no separate existence from matter.

Jesus is too colossal for the pen of phrasemongers, however artful. No man can dispose of Christianity with a bon mot

One had to cram all this stuff into one's mind for the examinations, whether one liked it or not. This coercion had such a deterring effect on me that, after I had passed the final examination, I found the consideration of any scientific problems distasteful to me for an entire year.

One must console oneself with the thought that time has a sieve through which most of these important things run into the ocean of oblivion and what remains after this selection is often still trite and bad.

I do know that kind fate allowed me to find a couple of nice ideas after many years of feverish labor.

If I had only one hour to save the world, I would spend fifty-five minutes defining the problem, and only five minutes finding the solution.