"The perfect woman is a higher type of humanity than the perfect man, and also something much rarer."

"Blessed are the forgetful, for they get the better even of their blunders."

"Is man merely a mistake of God's? Or God merely a mistake of man's?"

"One repays a teacher badly if one always remains nothing but a pupil."

"All psychology hitherto has remained stuck in moral prejudices and fears; it has not dared to descend into the depths."