This last statement is probably true of all plants and of all animals except that as applied to the human race it needs some transcendently important qualifications which students of evolution are very apt to neglect. I shall by and by point out these qualifications. At present we may note that the development of civilization, on its political side, has been a stupendous struggle for life, wherein the possession of certain physical and mental attributes has enabled some tribes or nations to prevail over others, and to subject or exterminate them. On its industrial side the struggle has been no less fierce; the evolution of higher efficiency through merciless competition is a matter of common knowledge. Alike in the occupations of war and in those of peace, superior capacity has thriven upon victories in which small heed has been paid to the wishes or the welfare of the vanquished. In human history perhaps no relation has been more persistently repeated than that of the hawk and the wren. The aggression has usually been defended as in the interests of higher civilization, and in the majority of cases the defence has been sustained by the facts. It has indeed very commonly been true that the survival of the strongest is the survival of the fittest. Such considerations affect our mood toward Nature in a way that is somewhat bewildering. On the one hand, as we recognize in the universal strife and slaughter a stern discipline through which the standard of animate existence is raised and the life of creatures variously enriched, we become to some extent reconciled to the facts. Assuming, as we all do, that the attainment of higher life is in itself desirable, our minds cannot remain utterly inhospitable towards things, however odious in themselves, that help toward the desirable end. Since we cannot rid the world of them, we acquiesce in their existence as part of the machinery of God's providence, the intricacies of which our finite minds cannot hope to unravel. On the other hand, a thought is likely to arise which in days gone by we should have striven to suppress as too impious for utterance; but it is wiser to let such thoughts find full expression, for only thus can we be sure of understanding the kind of problem we are trying to solve. Is not, then, this method of Nature, which achieves progress only through misery and death, an exceedingly brutal and clumsy method? Life, one would think, must be dear to the everlasting Giver of life, yet how cheap it seems to be held in the general scheme of things! In order that some race of moths may attain a certain fantastic contour and marking of their wings, untold thousands of moths are doomed to perish prematurely. Instead of making the desirable object once for all, the method of Nature is to make something else and reject it, and so on through countless ages, till by slow approximations the creative thought is realized. Nature is often called