Thinking is an experimental dealing with small quantities of energy, just as a general moves miniature figures over a map before setting his troops in action.

One must learn to give up momentary, uncertain and destructive pleasure for delayed, restrained, but dependable pleasure.

Love in the form of longing and deprivation lowers the self regard.

A civilization which leaves so large a number of its participants unsatisfied and drives them into revolt neither has nor deserves the prospect of a lasting existence.

The virtuous man contents himself with dreaming that which the wicked man does in actual life.

The idea of men's receiving an intimation of their connection with the world around them through an immediate feeling which is from the outset directed to that purpose sounds so strange and fits in so badly with the fabric of our psychology that one is justified in attempting to discover a psycho-analytic - that is, a genetic - explanation of such a feeling.

The religions of mankind must be classed among the mass-delusions of this kind. No one, needless to say, who shares a delusion ever recognizes it as such.