In the last analysis the entire field of psychology may reduce to biological electrochemistry.

The expectation that every neurotic phenomenon can be cured may, I suspect, be derived from the layman's belief that the neuroses are something quite unnecessary which have no right whatever to exist. Whereas in fact they are severe, constitutionally fixed illnesses, which rarely restrict themselves to only a few attacks but persist as a rule over long periods throughout life.

A man should not strive to eliminate his complexes but to get into accord with them: they are legitimately what directs his conduct in the world.

A man's heterosexuality will not put up with any homosexuality, and vice versa.

Religious doctrines … are all illusions, they do not admit of proof, and no one can be compelled to consider them as true or to believe in them.

Demons do not exist any more than gods do, being only the products of the psychic activity of man.

Beauty has no obvious use; nor is there any clear cultural necessity for it. Yet civilization could not do without it.