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

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.

In every age immorality has found no less support in religion than morality has. If the achievements of religion in respect to man's happiness, susceptibility to culture and moral control are no better than this, the question cannot but arise whether we are not overrating its necessity for mankind, and whether we do wisely in basing our cultural demands upon it.

Neurosis is the inability to tolerate ambiguity.

In almost every place where we find totems we also find a law against persons of the same totem having sexual relations with one another and consequently against their marrying. This, then, is 'exogamy', an institution related to totemism.

As regards intellectual work it remains a fact, indeed, that great decisions in the realm of thought and momentous discoveries and solutions of problems are only possible to an individual, working in solitude.

The ego represents what we call reason and sanity, in contrast to the id which contains the passions.