A tyranny based on ... deception and maintained by terror must inevitably perish from the poison it generates within itself.

All religions, arts and sciences are branches of the same tree.

I was very pleased with your kind letter. Until now I never dreamed of being something like a hero. But since you've given me the nomination I feel that I am one.

Problems cannot be solved by thinking within the framework in which the problems were created.

Fantasie is belangrijker dan kennis, want kennis is begrensd.

I was sitting in a chair in the patent office at Bern when all of a sudden a thought occurred to me: "If a person falls freely he will not feel his own weight." I was startled. This simple thought made a deep impression on me. It impelled me toward a theory of gravitation.

I have lived to prove Thoreau's contention that a man is rich in proportion to the number of things which he can afford to let alone.