"All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident."

"Women are directly adapted to act as the nurses and educators of our childhood, for the simple reason that they are themselves childish, frivolous and short-sighted; in a word, are big children all th…"

"The fundamental error of all systems of morality is that they are not based on observation."

"If we suspect that a man is lying, we should pretend to believe him, for then he becomes bold and assured, lies more energetically, and is unmasked."

"It is only at the first encounter that a face makes its full impression on us."