Homosexuality is assuredly no advantage, but it is nothing to be ashamed of, no vice, no degradation, it cannot be classified as an illness.

We know less about the sexual life of little girls than of boys. But we need not feel ashamed of this distinction; after all, the sexual life of adult women is a 'dark continent' for psychology.

How bold one gets when one is sure of being loved.

Humanity is in the highest degree irrational, so that there is no prospect of influencing it by reasonable arguments. Against prejudice one can do nothing.

[The child] takes his play very seriously and he expends large amounts of emotion on it. The opposite of play is not what is serious but what is real.

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

But the less a man knows about the past and the present the more insecure must prove to be his judgment of the future.