If, therefore, all the first men had the strict morality of families, they would no more have permitted the rise of SEMI-moral nations anywhere in the world than the Romans would have permitted them to arise in Italy. They would have conquered, killed, and plundered them before they became nations; and yet semi-moral nations exist all over the world. It will be said that this argument proves too much. For it proves that not only the somewhat-before-history men, but the absolutely first men, could not have had close family instincts, and yet if they were like most though not all of the animals nearest to man they had such instincts. There is a great story of some African chief who expressed his disgust at adhering to one wife, by saying it was 'like the monkeys.' The semi-brutal ancestors of man, if they existed, had very likely an instinct of constancy which the African chief, and others like him, had lost. How, then, if it was so beneficial, could they ever lose it? The answer is plain: they could lose it if they had it as an irrational propensity and habit, and not as a moral and rational feeling. When reason came, it would weaken that habit like all other irrational habits. And reason is a force of such infinite vigour--a victory-making agent of such incomparable efficiency--that its continually diminishing valuable instincts will not matter if it grows itself steadily all the while. The strongest competitor wins in both the cases we are imagining; in the first, a race with intelligent reason, but without blind instinct, beats a race with that instinct but without that reason; in the second, a race with reason and high moral feeling beats a race with reason but without high moral feeling. And the two are palpably consistent.