The very intellect, which finds so noble a vocation in the researches of science, and which is so brilliantly employed in penetrating into, and opening up, the _intelligibility_ of the physical universe; and by that means demonstrating the _congruousness_ of the cosmos; is the same intellect that is conscious of _itself_, and of its _power_; which knows itself as possessed of causative capacity; and which has absolutely no other source of knowledge concerning power, save that which arises in itself. The very rationality of the Creation, in our deepest analysis and broadest survey of it, leads the mind, by the conditions inseverable from its reasoning faculties, to see in its perfect relations the inevitable congruity of an intelligent cause. And all this, be it observed, results _after_ science has disclosed the splendid treasures of its knowledge, the beauty and indisputable accuracy of its methods, and the new senses with which it has endowed itself by its instruments. Yes; the mind goes out to this conclusion, not defiant of science, but gratefully paying toll to it for an infinitely enlightening and ennobling passage through the marvels of phenomena, and the splendour of Nature’s methods, right to the very margin, beyond which science herself declares she cannot go; and although the physicist may declare he does not need it, and the mathematician that he can dispense with it, although all their immediate problems can be worked without it, yet the mind goes forth on the wings of its rational powers, its moral consciousness, its judgment; and leaving the margin of matter, it seeks audience, as it were, with the very mystery that enshrouds the universe; and it rises to the conviction that its quest has not been vain; it has realized, dimly, imperfectly, and, as it were, faint with awe, the necessity of the presence and action of Eternal Mind.