The only person with whom you have to compare ourselves, is that you in the past. And the only per-son better you should be, this is who you are now.

No, our science is no illusion. But an illusion it would be to suppose that what science cannot give us we can get elsewhere.

The psychical, whatever its nature may be, is itself unconscious.

Adolescent stage in the development of the human race from which humanity should free itself.

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.

Maturity is the ability to postpone gratification.

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