The ideas that have lighted my way have been kindness, beauty and truth.

Hunger, love, pain, fear are some of those inner forces which rule the individual's instinct for self preservation.

Striving for peace and preparing for war are incompatible with each other, and in our time more so than ever.

The one who walks alone, is likely to find himself in places no one has ever been.

My position concerning God is that of an agnostic. I am convinced that a vivid consciousness of the primary importance of moral principles for the betterment and ennoblement of life does not need the idea of a law-giver, especially a law-giver who works on the basis of reward and punishment.

It is our American habit if we find the foundations of our educational structure unsatisfactory to add another story or wing.

Mozart's music is so pure and beautiful that I see it as a reflection of the inner beauty of the universe.