I have an infamously low capacity for visualizing relationships, which made the study of geometry and all subjects derived from it impossible for me.

Where such men love they have no desire and where they desire they cannot love

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

We are so made that we can derive intense enjoyment only from a contrast.

A civilization which leaves so large a number of its participants unsatisfied and drives them into revolt neither has nor deserves the prospect of a lasting existence.

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 consider it to be a variation of the sexual function, produced by a certain arrest of sexual development. Many highly respectable individuals of ancient and modern times have been homosexuals, several of the greatest men among them (Plato, Michelangelo, Leonardo da Vinci, etc.). It is a great injustice to persecute homosexuality as a crime--and a cruelty, too. If you do not believe me, read the books of Havelock Ellis.

A certain degree of neurosis is of inestimable value as a drive, especially to a psychologist.