Venger wrote:
Satanism is sort of a form of atheism. Satanists claim not to believe in God/Satan and Heaven/Hell since those are christian beliefs.
Both Atheism and Satanism are religions. A religion is any belief system or spiritual worldview requiring a leap of FAITH in something that cannot be proven. Atheism posits that there is no intelligent mechanism behind the creation of the universe, which must be accepted on faith as it cannot be conclusively proven. Existential, yes, but a (n anti) religious belief nonetheless.
Satanism (such as it exists - until Anton LeVay created it in the 60s, there was no such thing*) actually only requires belief in a Satanic 'principle' a sort of plastic energy in the ether which can be molded to one's purposes through willful intent. Levay belief the emotions of selfishness and hatred to be the easiest method of amassing and directing this energy, and created a set of rituals designed to facilitate the process, based on the works of previous modern magi like Aleister Crowley, MacGregor Mathers and other members of The Golden Dawn (their system of ritual magic, however, in spite of Crowley's gleefully malicious braggadocio, was more about mysticism and spiritual gnosis and psychological self-awareness). As spiritual pedigrees go, however, Satanism is about as valid as Scientology. Yawn.
Still, systems of belief that cannot be proven by empirical means and must be taken on faith.
At least until one adopts them and they work.
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*not at least as an organized group of like-minded followers. There have always been those who believed one could achieve material results by invoking the aid of unseen presences, both angelic and malevolent, but that sort of Demonology is not specifically 'Satanic' and differs little from the
prayers of religions everywhere. Whether calling upon the name of the Father, Son, Holy Spirit, Beelzebub, Gabriel, whatever, one bugaboo is as good as another.