If men’s natural growth is to be promoted and not hindered by the environment, if as many as possible of their desires and needs are to be satisfied, political institutions must, as far as possible, embody common purposes and foster instinctive liking. These two objects are interconnected, for nothing is so destructive of instinctive liking as thwarted purposes and unsatisfied needs, and nothing facilitates coöperation for common purposes so much as instinctive liking. When a man’s growth is unimpeded, his self-respect remains intact, and he is not inclined to regard others as his enemies. But when, for whatever reason, his growth is impeded, or he is compelled to grow into some twisted and unnatural shape, his instinct presents the environment as his enemy, and he becomes filled with hatred. The joy of life abandons him, and malevolence takes the place of friendliness. The malevolence of hunchbacks and cripples is proverbial; and a similar malevolence is to be found in those who have been crippled in less obvious ways. Real freedom, if it could be brought about, would go a long way towards destroying hatred. There is a not uncommon belief that what is instinctive in us cannot be changed, but must be simply accepted and made the best of. This is by no means the case. No doubt we have a certain native disposition, different in different people, which coöperates with outside circumstances in producing a certain character. But even the instinctive part of our character is very malleable. It may be changed by beliefs, by material circumstances, by social circumstances, and by institutions. A Dutchman has probably much the same native disposition as a German, but his instincts in adult life are very different owing to the absence of militarism and of the pride of a Great Power. It is obvious that the instincts of celibates become profoundly different from those of other men and women. Almost any instinct is capable of many different forms according to the nature of the outlets which it finds. The same instinct which leads to artistic or intellectual creativeness may, under other circumstances, lead to love of war. The fact that an activity or belief is an outcome of instinct is therefore no reason for regarding it as unalterable.