Laws, religions, creeds, and systems of ethics, instead of making society better than its best unit, make it worse than its average unit, because they are never up to date.

Civilization is a disease produced by the practice of building societies with rotten material.

The sex relation is not a personal relation. It can be irresistibly desired and rapturously consummated between persons who could not endure one another for a day in any other relation.

The philosopher is Nature's pilot.

If you go to Heaven without being naturally qualified for it you will not enjoy yourself there.

Every fool believes what his teachers tell him, and calls his credulity science or morality as confidently as his father called it divine revelation.

Socialism is the same as Communism, only better English.