(3) We often lack impulses which would add much to the worth of our lives; we are blind to all sorts of opportunities for rich and joyous living. We need to develop our latent needs, to expand our natures to their full potentiality, to learn to love many things we have not cared for. In general we ignore the joys that we have not ourselves experienced or imagined, and those which belong to a different realm from that of our temporary enthusiasms. A lovesick swain, an opium fiend, are utterly unable to respond to the lure of outdoor sport or the joy of the well-doing of work; these joys, though perhaps acknowledged as real possibilities for them, fail to attract their wills, touch no chord in them, have no influence on their choices. Morality is the great eye-opener and insistent reminder of ignored goods. (4) We often have perverted impulses. We inherit disharmonies from other conditions of life, like the vermiform appendix and the many other vestigial organs which have come down to us only for harm. In general we inherit bodies and brains fairly well organized for our welfare; but there are still atavisms to be ruthlessly stamped out. The craving for stimulants or drugs, sexual perversions, kleptomania, pyromania, and the other manias, bad temper, jealousy- there is a good deal of the old Adam in us which is just wholly bad and to be utterly done away with; rebellious impulses that are hopelessly at war with our own good and must go the way of cannibalism and polygamy. Morality is the stern exterminator of all such enemies of human welfare. What factors are to be considered in estimating the worth of personal moral ideals? This summary consideration of the obstacles that block the path to happiness through the heedless following of impulse, shows the necessity of moral ideals; that is to say, of directive codes which shall steer the will through the tumultuous seas of haphazard desire into the harbor of its true welfare. How, then, can we decide between conflicting ideals and estimate their relative value? It can only be by judging through experience the degree of happiness which they severally effect in the situations to which they are to be applied. But there are many factors which contribute to or detract from that happiness in its totality; and a proper estimation of ideals must note the degree in which they provide for each possible element of satisfaction.