In the animal kingdom, the rule is, eat or be eaten; in the human kingdom, define or be defined.

He who does not accept and respect those who want to reject life does not truly accept and respect life itself.

People dream of making the virtuous powerful, so they can depend upon them. Since they cannot do that, people choose to make the powerful virtuous, glorifying in becoming victimized by them.

There is no psychology; there is only biography and autobiography.

There is no such thing as mental illness, hence also no such thing as psychotherapy.

Every act of conscious learning requires the willingness to suffer an injury to one's self-esteem. That is why young children, before they are aware of their own self-importance, learn so easily.

If someone does something we disapprove of, we regard him as bad if we believe we can deter him from persisting in his conduct, but we regard him as mad if we believe we cannot.