LaVeyan Satanism, often referred to simply as Satanism among most adherents is a religion founded in 1966 by Anton LaVey. Its teachings are based on individualism, self-control and "eye for an eye" morality, drawing influences from the rituals and ceremonies of occultist Aleister Crowley and the philosophies of Friedrich Nietzsche and Ayn Rand. Employing Crowley's terminology, its adherents define Satanism as a "Left-Hand Path" religion and philosophy, rejecting traditional "Right-Hand Path" religions such as Christianity and Wicca for their perceived denial of life, and, as in Christianity, emphasis on abstinence and unnecessary guilt. Unlike Theistic Satanism, LaVeyan Satanism does not involve the literal worship of any being other than the self, but rather uses "Satan" as a symbol of carnality and earthly values, of man's inherent nature, and of a cosmos which Satanists perceive to be permeated and motivated by a force that has been given many names by man over the course of time. Anton LaVey established Satanism's first and largest religious organization, the Church of Satan, in 1966, and codified Satanic beliefs and practices in The Satanic Bible in 1969. The Church of Satan acknowledges that there are many Satanists around the world, including both members and non-members. It often rejects the legitimacy of any other organizations of Satanists, dubbing them reverse-Christians, pseudo-Satanists or Devil worshippers.
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The Eleven Satanic Rules of the Earth (LaVey 1967)
1. Do not give opinions or advice unless you are asked.
2. Do not tell your troubles to others unless you are sure they want to hear them.
3. When in another’s lair, show him respect or else do not go there.
4. If a guest in your lair annoys you, treat him cruelly and without mercy.
5. Do not make sexual advances unless you are given the mating signal.
6. Do not take that which does not belong to you unless it is a burden to the other person and he cries out to be relieved.
7. Acknowledge the power of magic if you have employed it successfully to obtain your desires. If you deny the power of magic after having called upon it with success, you will lose all you have obtained.
8. Do not complain about anything to which you need not subject yourself.
9. Do not harm little children.
10. Do not kill non-human animals unless you are attacked or for your food.
11. When walking in open territory, bother no one. If someone bothers you, ask him to stop. If he does not stop, destroy him.
en.wikipedia.org/wiki/LaVeyan_Satanism & www.churchofsatan.com/Pages/Eleven.html