force but justice as well; and when this ideal moment and this type of society are interchanged and treated as identical, on the one hand the philosophical concept of force is confused with that of justice and becomes impure, contradictory and incoherent, and finally annuls itself: on the other, the empirical type of barbaric society becomes exaggerated and unduly rigid. The confusion between the philosophic and the empirical is clearly expressed in Vico's aphorism defining the nature of things. "Nature of things is nothing else than their production at certain times and in certain manners: and whenever these latter are of such a kind, then the things produced are of such a kind and no other." Here we see the confusion between time and manner, between ideal and empirical genesis. Similarly, it is perfectly true that history ought to proceed in harmony with philosophy, and that a philosophical absurdity can never be a historical event: but, since the distinction between philosophy and empirical science was not drawn by Vico, when evidence was lacking and philosophy therefore inapplicable he felt no less sure of attaining truth. He merely filled the gap with a conjecture supplied by the schema of empirical science, and persuaded himself that he had fallen back on a "metaphysical proof." Or again, if he found himself faced by uncertain facts, instead of patiently waiting till the discovery of further evidence should dispel the doubt, he cut the knot by accepting the facts, as he put it, in conformity with laws: which always means the empirical schema. A legitimate method, doubtless, when treated as hypothetical. But this hypothesis became in its turn, for Vico, a "truth meditated in the idea": so that the comparison with facts, which none the less he recommends for the sake of confirmation, became strictly speaking superfluous: or, if the comparison showed that the facts disagreed with it, the facts, as mere appearance, must be in the wrong, rather than the hypothesis, which is laid down as philosophical truth, and therefore indubitable. Hence arises the tendency observed in Vico to do violence to the facts.