That fits more than the martians.
Actually, the Martians aren't really a big part of the book at. It's more about this naive, peaceful guy with all this mystical power, and everyone around him wants to exploit him. I think he sacrifices himself to save the world at the end.
You're off the mark a little there...
I read the book once but don't remember a lot of it.
Basically there's a guy, who, as has been previously mentioned, was raised by Martians. As a result he has all kinds of special powers, but that's not entirely important. Anyways, he's like being held in a hospital by the government, and he befriends a nurse there, and they escape...I've mostly forgotten the middle of the novel.
Anyways, he starts up this big religion/cult thing where he teaches members to do cool things with their minds (like telekinesis...I think), and as I recall two of the larger tenets of the religion/cult are sexual liberation, and the presence of God in everything. The novel ends with him being stoned to death by an angry mob while he kind of just stands there.
(Any of that is liable to be completely wrong)
A word that was invented by the book is "Grokk", which, put in really simple terms, means to understand something's very essence.