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HERBERT SPENCER
421

societies decrease, and the internal harmonious coöperations of their members increase."[1] How can this harmony be promoted? As we have seen, it comes more readily through freedom than through regulation. The formula of justice should be: "Every man is free to do that which he wills, provided he infringes not the equal freedom of any other man."[2] This is a formula hostile to war, which exalts authority, regimentation and obedience; it is a formula favorable to peaceful industry, for it provides a maximum of stimulus with an absolute equality of opportunity; it is conformable to Christian morals, for it holds every person sacred, and frees him from aggression;[3] and it has the sanction of that ultimate judge—natural selection—because it opens up the resources of the earth on equal terms to all, and permits each individual to prosper according to his ability and his work.

This may seem, at first, to be a ruthless principle; and many will oppose to it, as capable of national extension, the family principle of giving to each not according to his ability and product, but according to his need. But a society governed on such principles would soon be eliminated.

During immaturity benefits received must be inversely proportionate to capacities possessed. Within the family-group most must be given where least is deserved, if desert is measured by worth. Contrariwise, after maturity is reached benefit must vary directly as worth: worth being measured by fitness to the conditions of existence. The ill-fitted must suffer the evils of unfitness, and the well-fitted profit by their fitness. These are the two laws which a species must conform to if it is to be preserved.…If, among the young, benefit were proportioned to efficiency, the species would disappear forthwith; and if, among adults, benefit were proportioned to inefficiency, the species would disappear by decay in a few generations.…The only justification for the analogy between parent and child, and
  1. I, 377.
  2. II, 46.
  3. I, 257.