Man, whatever else he may be, is primarily a practical being, whose mind is given him to aid in adapting him to this world's life

To know one thing thoroughly would be to know the universe.

There is no being capable of a spiritual life who does not have within him a jungle. Where the wolf constantly HOWLS and the OBSCENE bird of night chatters endlessly.

Every sort of energy and endurance, of courage and capacity for handling life's evils, is set free in those who have religious faith.

There is no doubt that healthy-mindedness is inadequate as a philosophical doctrine, because the evil facts which it refuses positively to account for are a genuine portion of reality; and they may after all be the best key to life's significance, and possibly the only openers of our eyes to the deepest levels of truth.

A good hypothesis in science must have other properties than those of the phenomenon it is immediately invoked to explain, otherwise it is not prolific enough.

It is only by risking our persons from one hour to another that we live at all.