LaVeyan Satanism
LaVeyan Satanism is a philosophy and new religious movement founded in 1966 by American author and occultist Anton LaVey. The religion's doctrines and practices are codified in The Satanic Bible and overseen by the Church of Satan. Its core philosophy is based concepts of individualism, egoism, epicureanism, self-deification and self-preservation, and propagates a worldview of natural law, materialism, Lex Talionis, and mankind as animals in an amoral universe.
The religion is atheistic, rejecting the existence of gods and other supernatural beings. Practitioners do not believe that the character of Satan literally exists and do not worship him. Instead, Satan is viewed as a positive archetype who represents pride, carnality, liberty, enlightenment, undefiled wisdom, and of a cosmos which Satanists perceive to be motivated by a "dark evolutionary force of entropy that permeates all of nature and provides the drive for survival and propagation inherent in all living things". He also serves as a conceptual framework and an external metaphorical projection of [the Satanists] highest personal potential. Satan (Hebrew: שָּׂטָן satan, meaning "adversary") is seen as a symbol of defiance to the conservatism of mainstream philosophical and religious currents, mainly the Abrahamic religions, that see this character as their antithesis.