Most men have a good memory for facts connected with their own pursuits.

In order to disprove the assertion that all crows are black, one white crow is sufficient.

The most peculiar social self which one is apt to have is in the mind of the person one is in love with.

Man alone of all the creatures of earth can change his own pattern. Man alone is the architect of his own destiny.

Once you accept an idea, it's an idea whose time has come.

Feed the growing human being, feed him with the sort of experience for which from year to year he shows a natural craving, and he will develop in adult life a sounder sort of mental tissue, even though he may seem to be 'wasting' a great deal of his growing time, in the eyes of those for whom the only channels of learning are books and verbally communicated information.

Every time a resolve or a fine glow of feeling evaporates without bearing practical fruit is worse than a chance lost; it works to hinder future resolutions and emotions from taking the normal path of discharge. There is no more contemptible type of human character than that of the nerveless sentimentalist and dreamer, who spends his life in a weltering sea of sensibility and emotion, but who never does a manly concrete deed.