HOMO SAPIENS, 1. a mest body, whether it belongs to the race of man or the race of ants is yet but an animated vegetable. Given a theta being to guide it, it becomes part of a composite such as Homo sapiens. By itself, the body would live, walk around, react, sleep, kill, and direct an existence no better than that of a field mouse, or a zombie. Put a theta being over it and it becomes possessed of ethics and morals and direction and goals and the ability to reason; it becomes this strange thing called Homo sapiens. (HOM, p. 42)
Hubbard, L. R., (1975) Dianetics and Scientology Technical Dictionary. Los Angeles: Church of Scientology of California Publications Organization.