 He ends the chapter stating "To give up the illusion that sees in it an immaterial "substance" is not to deny the existence of the soul, but on the contrary to begin to recognize the complexity, the richness, the unfathomable profoundity of the genetic and cultural heritage and of the personal experience, conscious or otherwise, which together constitute this being of ours” (Monod, 159).The last chapter in the book is “The Kingdom and the Darkness”.Once man extended his domain over the subhuman sphere and dominated his environment the main threat became other men and tribal warfare came to be an important evolutionary selection factor and this would favor group cohesion.