Or, how are we to explain the appearance of so strange a visitant in a universe which is dominated by the "struggle for existence"? The intellectual difficulty of atheism is so insuperable that we hear of it no more from men of science. I think Mr. Spencer's speculations have given it the _coup de grace_. But difficult as is the question of the origin of the cosmos, far more so is that of conscience. On what principles are we to explain how a world, evolving itself mechanically, cycle after cycle, has eventually produced an element so utterly at variance with itself, an element which puts right before might, self-surrender before the struggle for existence, and the law of pity in place of the survival of the fittest? Is conscience a development of the cosmic process? And, if so, how is such a _volta face_ in nature explicable on purely mechanical grounds, even if the process itself were so explicable? And how striking a fact that the last words Mr. Huxley[2] spoke in public should have been devoted to prove that so opposed were the cosmic and ethical processes--in other words, so completely at variance are the law of conscience and the law of evolution--that only by the triumph of the former over the latter is progress possible in the world. Again, I ask, since conscience is not the voice of Nature, of what is conscience the voice and witness if not of one of whom it is written, "In the beginning was Reason; in the beginning was Mind"?[3] But there is another aspect of the question, and we must now pass on to inquire how far conscience is also "the voice of man commanding us to live for the right". Quite at the beginning of this ethical movement we protested, as plainly as words would allow, our entire allegiance to the teachings of physical science, and our readiness to abandon any doctrine of ethical religion which is disproved by experimental research. So convinced are we of the absolute unity of truth, because with Plato we believe in the unity of its source in the Divine intelligence, that to us it is inconceivable that there should be any fundamental contradiction in the orders of the real and the ideal. Things seen and unseen, the passing and the eternal, both ultimately take their origin in the same source, the Infinite. No finite thing can be the ultimate explanation of the universe, because it itself requires explanation. Hence, whatever science has to tell us about conscience will be enthusiastically acclaimed by us as true equally with what we learn from the masters of the higher experience, the philosophers who break unto us the bread of life.