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In the name "<b>Hermes Trismegistus</b>", the word "trismegistus" means "thrice-master".
<br> The name "Hermes Trismegistus" is the self-appointed pseudonym of an egomaniacal schizotypal person
<br> who wrote "The Corpus Hermeticum" in the first century CE.
<br> The corpus hermeticum is a mixture of neoplatonism, gnosticism, judeo-christian morality,
<br> and that which woud later come to be called "hermetic alchemy".
<br> Subsequently, other writers used the same pseudonym, pretending to be the same person.