The Tragic Sense of Life: Ernst Haeckel and the Struggle over Evolutionary ... - Robert J. Richards - Google Books

http://books.google.de/books?id=dgSC0TLldq8C&pg=PA430

Prior to the First World War, more people learned of evolutionary theory from the voluminous writings of Charles Darwin’s foremost champion in Germany, Ernst Haeckel (1834–1919), than from any other source, including the writings of Darwin himself. But,…