Once upon a time there was a little thetan* and he was a happy little thetan and the world was a simple thing. It was all very, very simple. And then one day somebody told him he was simple. And ever since that time he's been trying to prove that he is not.

L. Ron Hubbard

*thetan: the person himself-not his body or his name, the physical universe, his mind, or anything else; that which is aware of being aware; the identity which is the individual. The term was coined to eliminate any possible confusion with older, invalid concepts. It comes from the Greek letter Theta, which the Greeks used to represent thought or perhaps spirit, to which an n is added to make a noun in the modern style used to create words in engineering. It is also theta to the nth degree, meaning unlimited or vast.