"Because the ethics of men has been a powerful social ability since the most ancient period of human life, there has developed in the human heart a voice of authority that down to the present day still echoes in our own hearts. It has a mysterious quality that is not due to the stimulus of the outside world, nor is it a matter of advantage or disadvantage; [rather] it is a naturally produced authority. Its mysterious nature is similar to the mystery of sex, the mystery of mother love, and the mystery of sacrifice."
Ethics