The Parts of Man
Man consists of three parts. The first of these is the spirit, called in Scientology the thetan (from the Greek letter , theta, meaning “thought” or “spirit”), which is the individual himself.
The second of these parts is the mind. The thetan uses his mind as a communication and control system between himself and his environment.
The third of these parts is the body. The body is not the person. The most important of the three parts of man is the thetan, which is the spirit, or you.