We forge gradually our greatest instrument for understanding the world - introspection. We discover that humanity may resemble us very considerably - that the best way of knowing the inwardness of our neighbors is to know ourselves.

Creative ideas come to the intuitive person who can face up to the insecurity of looking beyond the obvious.

The central drama of our age is how the Western nations and the Asian peoples are to find a tolerable basis of co-existence.

We are concerned in public affairs, but immersed in our private ones.

We say that the truth will make us free. Yes, but that truth is a thousand truths which grow and change.

The radical novelty of modern science lies precisely in the rejection of the belief... that the forces which move the stars and atoms are contingent upon the preferences of the human heart.

Men who are orthodox when they are young are in danger of being middle-aged all their lives.