Morals and the Evolution of Man

CHAPTER I

THE PHENOMENON OF MORALITY

A very well-known experiment in animal psychology was once made by Möbius. An aquarium was divided into two compartments by means of a pane of glass; in one of these a pike was put and in the other a tench. Hardly had the former caught sight of his prey, when he rushed to the attack without noticing the transparent partition. He crashed wit...