There is no nature at an instant.

A great society is a society in which its men of business think greatly of their functions.

Peace is self-control at its widest-at the width where the "self" has been lost, and interest has been transferred to coordinations wider than personality.

To see what is general in what is particular, and what is permanent in what is transitory, is the aim of scientific thought.

Error is the price we pay for progress.

A man really writes for an audience of about ten persons. Of course if others like it, that is clear gain. But if those ten are satisfied, he is content.

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.