I did not know I loved you until I heard myself telling so, for one instance I thought, "Good God, what have I said?" and then I knew it was true.

The teacher, like the artist, the philosopher, and the man of letters, can only perform his work adequately if he feels himself to be an individual directed by an inner creative impulse, not dominated and fettered by an outside authority.

A man of Seville is shaved by the Barber of Seville if and only if the man does not shave himself. Does the barber shave himself?

If a Black Death could be spread throughout the world once in every generation survivors could procreate freely without making the world too full.

Law in origin was merely a codification of the power of dominant groups, and did not aim at anything that to a modern man would appear to be justice

The essence of life is doing things for their own sakes.

An extra-terrestrial philosopher, who had watched a single youth up to the age of twenty-one and had never come across any other human being, might conclude that it is the nature of human beings to grow continually taller and wiser in an indefinite progress towards perfection; and this generalization would be just as well founded as the generalization which evolutionists base upon the previous history of this planet.