True guilt is guilt at the obligation one owes to oneself to be oneself. False guilt is guilt felt at not being what other people feel one ought to be or assume that one is.

The brotherhood of man is evoked by particular men according to their circumstances. But it seldom extends to all men. In the name of our freedom and our brotherhood we are prepared to blow up the other half of mankind and to be blown up in our turn.

Freud was a hero. He descended to the Underworld and met there stark terrors. He carried with him his theory as a Medusa's head which turned these terrors to stone.

Man as seen as an organism or man as seen as a person discloses different aspects of the human reality to the investigator. Both are quite possible methodologically but one must be alert to the possible occasion for confusion. (...) Seen as an organism, man cannot be anything else but a complex of things, of its, and the processes that ultimately comprise an organism are it-processes.

Madness need not be all breakdown. It may also be break-through. It is potential liberation and renewal as well as enslavement and existential death.

Children are not yet fools, but we shall turn them into imbeciles like ourselves, with high I.Q.'s if possible.

We are bemused and crazed creatures, strangers to our true selves, to one another, and to the spiritual and material world - mad, even, from an ideal standpoint we can glimpse but not adopt.