Lewisite is a poisonous liquid with a poisonous vapour, called after an American chemist, Lewis. This chapter deals with Mr. C. S. Lewis' Broadcast Talks and his arguments, which seems to include many which definitely muddy the stream of human thought. The ontological argument used by St. Anselm and others, and revived by Descartes. The plain fact is that St. Thomas had not the intellectual equipment to deal with infinite series, and we have this equipment to-day. Perhaps Mr. Lewis would be only slightly uncomfortable in a society where cannibalism was the rule, or one in which a murderer was not punished, but was compelled to adopt the children of his victim. The plain fact is that different cultures have or have had almost every morality which is compatible with the existence of society. The survivors of Hiroshima and Nagasaki may very well wish that the creator had induced Rutherford into logical errors when he started thinking about atomic nuclei.