=Individualistic Problem.=--Only for a short time, during the first flush of new achievement and of hopeful adventure, did extreme individualism and social interests remain naïvely combined. The individualistic tendency found a convenient intellectual tool in a psychology which resolved the individual into an association or series of particular states of feeling and sensations; and the good into a like collection of pleasures also regarded as particular mental states. This psychological atomism made individuals as separate and disconnected as the sensations which constituted their selves were isolated and mutually exclusive. Social arrangements and institutions were, in theory, justifiable only as they could be shown to augment the sum of pleasurable states of feeling of individuals. And as, quite independent of any such precarious theory, the demand for reform of institutions became more and more imperative, the situation was packed by Rousseau into a formula that man was naturally both free and good, and that institutional life had enslaved and thereby depraved him. At the same time, there grew up an enthusiastic and optimistic faith in "Nature," in her kindly intentions for the happiness of humanity, and in her potency to draw it to perfection when artificial restrictions were once out of the way. Individuals, separate in themselves and in their respective goods, were thereby brought into a complete coincidence and harmony of interests. Nature's laws were such that if the individual obeyed them in seeking his own good he could not fail to further the happiness of others. While there developed in France (with original initiative from England) this view of the internal isolation and external harmony of men, a counterpart movement took place in Germany.