In 1905, he published his book Theozoölogie oder die Kunde von den Sodoms-Äfflingen und dem Götter-Elektron (Theozoology, or the Science of the Sodomite-Apelings and the Divine Electron) in which he advocated sterilization of the sick and the "lower races" as well as forced labour for "castrated chandals", and glorified the "Aryan race" as "Gottmenschen" ("god-men"). Lanz justified his esoteric racial ideology by attempting to give it a Biblical foundation; according to him, Eve, whom he described as initially being divine, involved herself with a demon and gave birth to the "lower races" in the process. Furthermore, he claimed that this led to blonde women being attracted primarily to "dark men", something that only could be stopped by "racial demixing" so that the "Aryan-Christian master humans" could "once again rule the dark-skinned beastmen" and ultimately achieve divinity. A copy of this book was sent to Swedish poet August Strindberg, from whom Lanz received an enthusiastic reply in which he was described as a "prophetic voice".
