"The chief source of man's unhappiness is that he does not know how to stay quietly in his room."

"If children were brought into the world by an act of pure reason alone, would the human race continue to exist? Would not a man rather have so much sympathy with the coming generation as to spare it t…"

"In their hearts women think that it is men's business to earn money and theirs to spend it."

"Life is a tragedy for those who feel, and a comedy for those who think."

"The value of a man is not measured by what he has, but by what he is."