I. Haeckel and His Opponents

How deep-rooted is the prejudice against the idea of evolution can be seen at any moment by the objections which our philosophical contemporaries make against it. Otto Liebmann, who, in his Analysis of Reality and his Thoughts and Facts, has subjected the fundamental views of science to criticism, expresses himself in a remarkable manner about the conception of evolution. In face of the facts, he cannot deny the justice of the conception that higher organisms proceed from lower. He therefore endeavours to represent the range and importance of this conception for the higher need of explanation as being as small as possible. “Accepted, the theory of descent ... granted that it be complete, that the great genealogical register of Nature's organic beings lies open before us; and that, not as an hypothesis, but as historically proven fact, what should we then have? A gallery of ancestors, such as one finds also in princely castles; only not as a fragment, but as a completed whole.” This means that nothing of any consequence has been accomplished towards the real explanation, when one has shown how what appears later proceeds as a new formation from what preceded.