A happy man is too satisfied with the present to dwell too much on the future.

The development of general ability for independent thinking and judgment should always be placed foremost, not the acquisition of special knowledge.

Politics is more difficult than physics.

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.

When a blind beetle crawls over the surface of a globe he doesn't notice that the track he has covered is curved. I was lucky enough to have spotted it.

Do not grow old, no matter how long you live.

It is both auspicious and peaceful for people to choose vegetarinism.