"The greatest absurdity is to think that women are capable of artistic or scientific production. They are not."

"The nobler and more perfect a thing is, the later and slower it is in arriving at maturity. A man reaches the maturity of his reason and mental powers hardly before the age of eight-and-twenty; a woma…"

"The only original philosophical thought is that life is not worth living."

"It is a clear gain to sacrifice pleasure in order to avoid pain."

"Man is the only animal that causes pain to others for the mere pleasure of doing it."