We have here very frequently discussed the necessity of training in character and the virtues as a lifelong activity. This subject is the concern of moral philosophy: that is, the study of conduct and the virtues. It is through moral philosophy that a man’s passions are bridled, directed, and channeled for positive use. Without this discipline, he never learns to sublimate his ego to a higher purpose; he begins to think of himself as an emperor, a man beyond the reach of the rules and obligations that apply to everyone else. Selfishness, arrogance, and close-mindedness creep into the subconscious, eventually to dominate every waking impulse.