If now we ask why we must translate experience from a more concrete or pure into a more intellectualized form, filling it with ever more abounding conceptual distinctions, rationalism and naturalism give different replies. The rationalistic answer is that the theoretic life is absolute and its interests imperative; that to understand is simply the duty of man; and that who questions this need not be argued with, for by the fact of arguing he gives away his case. The naturalist answer is that the environment kills as well as sustains us, and that the tendency of raw experience to extinguish the experient himself is lessened just in the degree in which the elements in it that have a practical bearing upon life are analyzed out of the continuum and verbally fixed and coupled together, so that we may know what is in the wind for us and get ready to react in time. Had pure experience, the naturalist says, been always perfectly healthy, there would never have arisen the necessity of isolating or verbalizing any of its terms. We should just have experienced inarticulately and unintellectually enjoyed. This leaning on 'reaction' in the naturalist account implies that, whenever we intellectualize a relatively pure experience, we ought to do so for the sake of redescending to the purer or more concrete level again; and that if an intellect stays aloft among its abstract terms and generalized relations, and does not reinsert itself with its conclusions into some particular point of the immediate stream of life, it fails to finish out its function and leaves its normal race unrun. Most rationalists nowadays will agree that naturalism gives a true enough account of the way in which our intellect arose at first, but they will deny these latter implications. The case, they will say, resembles that of sexual love. Originating in the animal need of getting another generation born, this passion has developed secondarily such imperious spiritual needs that, if you ask why another generation ought to be born at all, the answer is: 'Chiefly that love may go on.' Just so with our intellect: it originated as a practical means of serving life; but it has developed incidentally the function of understanding absolute truth; and life itself now seems to be given chiefly as a means by which that function may be prosecuted. But truth and the understanding of it lie among the abstracts and universals, so the intellect now carries on its higher business wholly in this region, without any need of redescending into pure experience again.