We cannot tell how the state of nature continued to subsist, or, if it ever subsisted, how and why it ever came to an end, because the agencies which are alleged to have brought it to an end must have been coeval with the appearance of man himself.  If gods had brought to men seed, fire, and the mechanical arts, as in one of the Platonic myths,[190] we could understand that there was a long stage preliminary to these heavenly gifts.  But if the gods had no part nor lot in it, and if the accidents that slowly led the human creature into union were as old as that nature, of which indeed they were actually the component elements, then man must have quitted the state of nature the very day on which he was born into it.  And what can be a more monstrous anachronism than to turn a flat-headed savage into a clever, self-conscious, argumentative utilitarian of the eighteenth century; working the social problem out in his flat head with a keenness, a consistency, a grasp of first principles, that would have entitled him to a chair in the institute of moral sciences, and entering the social union with the calm and reasonable deliberation of a great statesman taking a critical step in policy?  Aristotle was wiser when he fixed upon sociability as an ultimate quality of human nature, instead of making it, as Rousseau and so many others have done, the conclusion of an unimpeachable train of syllogistic reasoning.[191] Morelly even, his own contemporary, and much less of a sage than Aristotle, was still sage enough to perceive that this primitive human machine, “though composed of intelligent parts, generally operates independently of its reason; its deliberations are forestalled, and only leave it to look on, while sentiment does its work."[192] It is the more remarkable that Rousseau should have fallen into this kind of error, as it was one of his distinctions to have perceived and partially worked out the principle, that men guide their conduct rather from passion and instinct than from reasoned enlightenment.[193] The ultimate quality which he named pity is, after all, the germ of sociability, which is only extended sympathy.  But he did not firmly adhere to this ultimate quality, nor make any effort consistently to trace out its various products.

We do not find, however, in Rousseau any serious attempt to analyse the composition of human nature in its primitive stages.  Though constantly warning his readers very impressively against confounding domesticated with primitive men, he practically assumes that the main elements of character must always have been substantially identical with such elements and conceptions as are found after the addition of many ages of increasingly complex experience.  There is something worth considering in his notion that civilisation has had effects upon man analogous to those of domestication upon animals, but he lacked logical persistency enough to enable him to adhere to his own idea, and work out conclusions from it.