““There is therefore neither conflict nor variation between the method of Logic and the method of Nature. The movement of both is in the same direction; the only difference is in the point of starting. And another truth no less important, which follows from the foregoing discussion, is that the method of Nature is fundamental to the method of Logic. Physics should precede metaphysics, but not exclude it; both are essential to every true science, and physics, which stops with physics, leads man by dazzling promises into some Utopian desert only to leave him there to die of hunger. And it is no less true that metaphysics, without this basis in experimental science, is illusory and untrustworthy, wherever the original data are necessarily empirical.””