O. is no mystic, proclaiming his unity with all existence, in the fashion of Walt Whitman. Rather he is a man with a huge capacity for pleasure, not easily disgusted or annoyed, with desires that reach in every direction yet with controlled purpose to guide his life. As he passes into middle age he finds his pleasures narrowing, as all men do, and he finds his appetites and tastes are becoming more restricted. This is because his purpose becomes more dominant, his habits are more imperious, his energy less exuberant. In thought O. is almost a pessimist because his knowledge of life, his intelligence and his sympathy make it difficult to understand the need of suffering, of disease and of conflict. But in emotion he still remains an optimist, glad to be alive at any price and rejoicing in the life of all things. Apropos of this contradiction between thought and mood, it is sometimes found reversed. There are those whose philosophy is optimistic, who will not see aught but good in the world, yet whose facial expression and actions exhibit an essential melancholy. In every category of character there are specialists, individuals whose main reactions are built around one great trait. Thus there are those whose egoism takes the form of pride in family, or in personal beauty, or some intellectual capacity, or in being independent of others, who worship self-reliance or self-importance. There are the individuals whose social instincts express themselves in loquacity, in a talkativeness that is the main joy of their lives, though not at all the joy of other lives. A fascinating series of personalities in this respect come to my mind--L. B., who talks at people, never with them, since he seems to take no note of their replies; T. K., who seems to regard conversation as largely a means of demonstrating her superiority, for she picks her subjects with the care a general selects his battlefield; F., who is a born pedagogue and seeks to instruct whoever listens to him, whose conversation is a lecture and a monologue; R. O., the reticent, says little but that pertinent and relevant, cynical and shrewd; and R. V., who says little and that with timidity and error. So there are specialists in caution and "common sense," self-controlled, never rash, calculating, cool and egotistic, narrow and successful. Every one knows this type, as every one knows the "fool," with his poor judgment, his unwise confidence in himself and others, his lack of restraint. There is the tactful man, conciliating, pliant, seeking his purposes through the good will of others which he obtains by "oil" and agreeableness, and there is the aggressive man, preferring to fight, energetic, at times rash, apt to be domineering, and crashing on to victory or defeat according to the caliber of his opponents and the nature of the circumstances.