A race preserves its vigor so long as it harbors a real contrast between what has been and what may be; and so long as it is nerved by the vigor to adventure beyond the safeties of the past. Without adventure civilization is in full decay.

Art attracts us only by what it reveals of our most secret self.

What is morality in any given time or place? It is what the majority then and there happen to like and immorality is what they dislike.

Religion is the reaction of human nature to its search for God.

Education with inert ideas is not only useless; it is above all things harmful.

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.

Without adventure civilization is in full decay.