I. Haeckel and His Opponents

It is characteristic of Haeckel's deeply philosophical nature that, after the appearance of Darwin's Origin of Species, he at once recognised the full significance for man's entire conception of the Universe, of the principles therein established; and it speaks much for his philosophical enthusiasm that he boldly and tirelessly combated all the prejudices which arose against the acceptance of the new truth by the creed of modern thought. The necessity that all modern scientific thinking should reckon with Darwinism was expounded by Haeckel at the fiftieth meeting of German scientists and doctors on the 22nd September, 1877, in his address, The Present Theory of Evolution in Relation to Science as a Whole. He delivered a widely-embracing Confession of Faith of a Man of Science on the 9th October, 1892, in Altenburg at the seventy-fifth anniversary of the Society for Natural Science of the Osterland. (This address was printed under the title, Monism as a link between Religion and Science, Bonn, 1892.) What has been yielded by the remodelled doctrine of evolution and our present scientific knowledge towards the answering of the “question of questions,” he has recently expounded in its broad lines in the address mentioned above, On our Present Knowledge as to the Origin of Man. Herein Haeckel handles afresh the conclusion, which follows as a matter of course from Darwinism for every logical thinker, that man has developed out of the lower vertebrates, and further, more immediately from true apes.