Is there a human spirit?

In Scientology, we call it a "Thetan."

A brief description:

In the Scientology religion, man is held to consist of three parts—thetan, mind and body. The thetan is the spiritual being. The thetan is the individual. One is a thetan who has a mind and who occupies a body. As is explained more fully below, the thetan is that which animates the body and uses the mind.

 

One of the most basic tenets of Scientology is that man is an immortal spiritual being whose experience extends well beyond a single lifetime and whose capabilities are unlimited, even if not presently realized.

 

The term is taken from the Greek letter theta for thought or life or the spirit. It is used to avoid confusion with previous concepts of the soul.

Source of above quote

I've been accused, what with the "DaVinci Code" and current interest in mystical secret societies, of belonging to a "secret society." I beg to differ. Anyone can join Scientology, can study as much as they please, and can experience for themselves that they are an immortal being. Scientology is an heuristic religion, by which I mean experiential. You don't have to "believe" anything. In fact, you shouldn't. You discover what is true for you.

L. Ron Hubbard has said

"Many want you to believe things just to suit their own ends.
What is true is what is true for you." (From The Way to Happiness)

You can discover your own truth, your own true nature, and I guarantee that you will be pleased by what you find.