The inclination to aggression constitutes the greatest impediment to civilization.

The impression forces itself upon one that men measure by false standards, that everyone seeks power, success, riches for himself, and admires others who attain them, while undervaluing the truly precious thing in life.

Poets are masters of us ordinary men, in knowledge of the mind, because they drink at streams which we have not yet made accessible to science.

The division of the psychical into what is conscious and what is unconscious is the fundamental premise of psycho-analysis; and it alone makes it possible for psycho-analysis to understand the pathological processes in mental life, which are as common as they are important, and to find a place for them in the framework of science.

If you want your wife to listen to you, then talk to another woman; she will be all ears.

I cannot face the idea of life without work. What would one do when ideas failed or words refused to come? It is impossible not to shudder at the thought.

Whatever fosters the growth of civilization works at the same time against war.