I get the most joy in life out of music.

You do not really understand something unless you can explain it to your grandmother.

Occurrences in this domain are beyond the reach of exact prediction because of the variety of factors in operation, not because of any lack of order in nature.

Arrows of hate have been aimed at me too, but they have never hit me, because somehow they belonged to another world with which I have no connection whatsoever.

Man owes his strength in the struggle for existence to the fact that he is a social animal.

Since the mathematicians have invaded the theory of relativity I do not understand it myself any more.

Let every man judge according to his own standards, by what he has himself read, not by what others tell him.