No one who, like me, conjures up the most evil of those half-tamed demons that inhabit the human breast, and seeks to wrestle with them, can expect to come through the struggle unscathed.

Only the real, rare, true scientific minds can endure doubt, which is attached to all our knowledge.

In so doing, the idea forces itself upon him that religion is comparable to a childhood neurosis, and he is optimistic enough to suppose that mankind will surmount this neurotic phase, just as so many children grow out of their similar neurosis.

Adolescent stage in the development of the human race from which humanity should free itself.

Words and magic were in the beginning one and the same thing, and even today words retain much of their magical power.

public self is a conditioned construct of the inner psychological self.

We know that the great majority of people have a strong need for authority which it can admire, to which it can submit, and which dominates and sometimes even ill-treats it.