I studied philosophy and used to be a Catholic, and wrote this book on transhumanism, available in PDF form for free. It is about 140 pages.
Ethics as Warfare is a book that describes the philosophical confrontation between transhumanism and the Christian tradition. In the Christian case, faith in the Word, who was incarnate as man, has us maintain the human species. In the non-Christian case, the human essence is no longer the ground of Natural Law. In fact, we are to become beings capable of sculpting Natural Law, like unto gods. This is the meaning of the "Tree of Knowledge of Good and Evil." This god-potential of mankind is obviously a threat to the Christian tradition, as well as Enlightenment values; yet it is inevitable. So where will you end up?