The phenomenon of will contending against desire occurs usually when a stimulus not characteristically powerful in a man's conduct becomes so through special conditions of excitement or fatigue. When a man is tired, or stirred by violent emotion, his systematic organization of habits begins to break down. The ideal permanent or inclusive self is then brought into conflict with a temporary passion. Love conflicts with duty, the lower with the higher self, flesh with spirit, desire with will. Few men have so thoroughly integrated a self that such conflicts altogether cease. Every one carries about with him a more or less divided soul. Fire and ice within me fight Beneath the suffocating night. There are, in the records of abnormal psychology, many cases of really divided personalities, cases of two or more completely separate habit-organizations inhabiting the same physical body. Such a complete Dr.-Jekyll-and-Mr.-Hyde dissociation of a personality is clearly abnormal. But it is almost as rare to find a completely integrated character. We are all of us more or less multiple personalities. Our various personalities usually keep their place and do not interfere with each other. Our professional and family selves may be different; they do not always collide. But the various characters that we are in various situations not infrequently do clash. The self whose keynote is ambition or learning may conflict with the self whose focus is love. "Resolve to be thyself; and know, that he Who finds himself, loses his misery!"