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

These [religious ideas] are given out as teachings, are not precipitates of experience or end-results of thinking: they are illusions, fullfilments of the oldest, strongest and most urgent wishes of mankind.

By abolishing private property one deprives the human love of aggression.

The voice of the intellect is soft one, but it does not rest until it has gained a hearing. Ultimately, after endless rebuffs, it succeeds. This is one of the few points in which one may be optimistic about the future of mankind.

This transmissibility of taboo is a reflection of the tendency, on which we have already remarked, for the unconscious instinct in the neurosis to shift constantly along associative paths on to new objects.

This is one race of people for whom psychoanalysis is of no use whatsoever.

Our fascination with gold is related to the fantasies of early childhood.