The preternatural solemnity of a good many of the professionally religious is to me a point against them.

Art heightens the sense of humanity. It gives an elation to feeling which is supernatural...A million sunsets will not spur us on towards civilization. It requires Art to evoke into consciousness the finite perfections which lie ready for human achievement.

We must produce a great age, or see the collapse of the upward striving of our race.

There is a technique, a knack, for thinking, just as there is for doing other things. You are not wholly at the mercy of your thoughts, any more than they are you. They are a machine you can learn to operate.

From the moment of birth we are immersed in action, and can only fitfully guide it by taking thought.

Aristotle discovered all the half-truths which were necessary to the creation of science.

Ninety percent of our lives is governed by emotion.