There comes a stage in the moral evolution of man when he perceives and understands the moral of beneficence, and he learns to return good for evil. At this stage in his progress he hears a chord that connects and runs through him and through all. He finds himself as it were a dome, in which good and evil find re-echoing tones. Evil done to him echoes within him in a desire to do evil in return; and good done to him echoes within him in a desire to return good. Therefore, in order that his own actions may in their turn call out nothing but good, he desires always to do good, and to return both good for good, and good for evil.