The last mark of man, that distinguishes him from all animals is, that he believes in God. One half the human race at this moment profess some creed in which God is the great first cause, the Creator and Governor of the world. Of the other half, hardly any are quite without religion. "Obliged as I am," says M. Quatrefages, in words which I have had occasion to quote elsewhere,[6] "even by my education, to pass in review the races of men, I have sought for atheism in the lowest and in the highest, but nowhere have I met with it, except in an individual, or at most in some school of men, more or less known, as we have seen in Europe in the last century, and as we see at the present day. Everywhere and always the masses of the people have escaped it." But for my present argument it is not necessary to insist that a right belief in God prevails. There is a belief in God, and it cannot have come from experience or observation of visible facts. You may lower the position of man, by comparing him to the apes, and by chemical analysis of his brain; all the more wonderful is it that a creature in such sorry case should pretend to hold communion with the divine. His feet are in the earthy clay, but his head is lifted up towards heaven. Heir to a hundred maladies, the sport of a hundred passions, holding on this life, so chequered in its complexion, but for a few days, this creature cries out of his trouble: "God exists; and he can see and hear me." Man, if I have proved my position, stands quite alone at the head of the kingdoms of nature, alone in his power of controlling it, alone in his appreciation of its beauty, alone in the self-government of conscience, the first of all the creatures of God, to pronounce the name of Him who had made all things, in a world which for ages had been blind to its Maker, and thankless because blind. Now it has become, and will probably continue to be, a question of the deepest interest to mankind, how these four kingdoms came into being. And at present there is a tendency towards a theory purely material and mechanical. It is so in Germany, the country of Büchner, Vogt, and Moleschott; it is so in France, where Comte and Littré have written; it is so here in England, where it is needless to quote distinguished names. I purpose, in the remainder of this lecture, to attempt an interpretation of the facts before us, quite different from this prevalent notion; and also to show how vicious and how inadequate in a scientific point of view the system known as materialism appears to be. The time is all too short for such a purpose: but any address like this can only aim to scatter germs of thought, not to present a system.