- Also spelled:
- Hermes Trismegistos
- Notable Works:
- “Emerald Tablet”
Hermes Trismegistus
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Who was Hermes Trismegistus?
Hermes Trismegistus is the Greek name for the Egyptian god Thoth, a deity associated with writing, wisdom, and magic. The Greeks identified Thoth with their god Hermes around the 3rd century BCE. The epithet "Trismegistus," meaning "thrice-greatest," is derived from the Egyptian term aa aa ("great, great"), an epithet for Thoth.
Writings attributed to Hermes-Thoth are divided into two categories: "popular" Hermetism, dealing with astrology and occult sciences, and "learned" Hermetism, focused on theology and philosophy. These writings, dating from the 1st to 3rd centuries CE, blend Eastern religious elements with Greek philosophy. During the Hellenistic period, works ascribed to Hermes Trismegistus primarily concerned astrology, later expanding to include medicine, alchemy, and magic.
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Why is Hermes Trismegistus connected to both Egypt and Greece?
Hermes Trismegistus is associated with both Egypt and Greece due to the syncretism of Egyptian and Greek cultures. Hermes Trismegistus is the Greek name for the Egyptian god Thoth, a deity of writing, learning, and wisdom.
Greeks identified Thoth with their god Hermes as early as Herodotus, and by 3rd century BCE, this identification became official. The epithet Trismegistus, meaning "thrice-greatest," is derived from the Egyptian term for "greatest," which was an epithet of Thoth in hieroglyphics.
As a result, the Hermetic writings, which are attributed to Hermes-Thoth, represent a fusion of Eastern religious elements with Greek philosophies.
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What does the name 'Trismegistus' mean?
The name Hermes Trismegistus refers to the Greek name for the Egyptian god Thoth, who was the god of the moon, writing, and learning. The Greeks identified Thoth with their god Hermes.
The epithet Trismegistus means "thrice-greatest." It comes from the Greek Hermēs trismegistos, which translates literally to Hermes thrice greatest. The epithet represents a development from the Egyptian aa aa (“great, great,” that is, “greatest”), which was an epithet of Thoth in late hieroglyphics.
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What types of writings are linked to Hermes Trismegistus?
Hermes Trismegistus is the Greek name for the Egyptian god Thoth, who was credited as the author of Hermetic writings on occult subjects and theology. These writings fall into two classes: popular Hermetism, dealing with astrology and other occult sciences, and learned Hermetism, focused on theology and philosophy.
Works ascribed to Hermes Trismegistus include treatises on medicine, alchemy, and magic. The Emerald Tablet, a source for medieval alchemists, is also associated with Hermes. The theological writings are represented chiefly by the 17 treatises of the Corpus Hermeticum, fragments in Stobaeus, and a Latin translation of the Asclepius.
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How did Hermes Trismegistus influence later religious or philosophical ideas?
Hermes Trismegistus, the Greek name for the Egyptian god Thoth, was regarded as the source of Hermetic writings on theology, philosophy, and occult subjects. These writings fall into two classes: popular Hermetism, dealing with astrology and occult sciences, and learned Hermetism, focused on theology and philosophy.
Hermes Trismegistus influenced later religious and philosophical ideas through the Renaissance and beyond. During the Renaissance, Marsilio Ficino and Pico della Mirandola, Italian humanists, developed an interest in Hermetism and Neoplatonism, believing they contained an ancient, universal wisdom from God. Hermeticism exerted a stabilizing force on culture and paved the way for change, supplying a quasi-religious endorsement of reason and nature and authorizing the unhindered exercise of the human intellect, feeding into the scientific revolution and earning praise from Francis Bacon. Lines of Hermetic influence would extend to later developments, including Rosicrucianism, Freemasonry, and the Enlightenment itself.
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What is Hermeticism and how does it relate to Hermes Trismegistus?
Hermeticism is a collection of theological, philosophical, and occult beliefs based on the writings ascribed to Hermes Trismegistus, a Greek name for the Egyptian god Thoth.
Thoth was the scribe of the gods, credited as the inventor of writing and patron of arts dependent on writing, like medicine, astronomy, and magic. Greeks identified Thoth with their god Hermes. The epithet Trismegistus, meaning "thrice-greatest," comes from the Egyptian term aa aa ("great, great"), an epithet of Thoth.
Hermetic writings fall into two categories: "popular" Hermetism, dealing with astrology and occult sciences, and "learned" Hermetism, focused on theology and philosophy. These writings blend Eastern religious elements with Greek philosophies.
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Hermes Trismegistus, the Greek name applied to the Egyptian god Thoth as the reputed author or source of the Hermetic writings, works of revelation on occult subjects and theology.
Thoth was the scribe of the gods, the inventor of writing, and the patron of all the arts dependent on writing, including medicine, astronomy, and magic. At least as early as Herodotus, Greeks had identified him with their god Hermes, and by the 3rd century bce the identification was official. On the Rosetta Stone (196 bce) Hermes “the great, the great” is evidently Thoth. The epithet Trismegistus (Greek: “thrice-greatest”) occurs only rarely outside the Hermetic texts. It represents a development from the Egyptian aa aa (“great, great”; that is, “greatest”), which is found as an epithet of Thoth in late hieroglyphics.
The writings ascribed to Hermes-Thoth fall into two main classes: “popular” Hermetism dealt with astrology and the other occult sciences, and “learned” Hermetism concerned itself with theology and philosophy. From the Renaissance until the end of the 19th century little attention was paid to the popular Hermetic literature. More recent study has shown that its development preceded that of the learned Hermetism and that it reflects ideas and beliefs that were widely held in the early Roman Empire and are therefore significant for the religious and intellectual history of the time.
In the Hellenistic Age it was chiefly works on astrology which were ascribed to Hermes; to these were later added treatises on medicine, alchemy, and magic. The concept which underlies astrology, that the Cosmos constitutes a unity and that all parts of it are interdependent, is basic also to the other pseudosciences. To make this principle effective in practice (and Hermetic “science,” unlike Aristotelianism, was intensely utilitarian), it was necessary to know the laws of sympathy and antipathy by which the parts of the universe were related. Since these assumed affinities did not in fact exist and hence could not be discovered by ordinary scientific methods, recourse was had to divine revelation. There was a growing distrust of traditional Greek rationalism and a breaking down of the distinction between science and religion. Hermes-Thoth was but one, if perhaps the most important, of the gods and prophets (chiefly of Middle Eastern origin) to whom knowledge seekers turned for a divinely revealed wisdom.
The theological writings are represented chiefly by the 17 treatises of the Corpus Hermeticum, by extensive fragments in Stobaeus, and by a Latin translation of the Asclepius, preserved among the works of Apuleius. These date probably from the first three centuries ce. All are marked by a sincere piety of a mystical type, but there is no single doctrine which is consistently set forth, and it is unlikely that there was any well-defined Hermetic community or “church.” Though the setting is Egyptian, the philosophy, like the language, is Greek.
Hermetism was extensively cultivated by the Arabs, and through them it reached and influenced such men as Albertus Magnus in the West. There are frequent allusions to Hermes Trismegistus in late medieval and Renaissance literature.

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