This specializes in the publication of books concerning Gnosticism, Christian mysticism and Hermetic Philosophy.
His book, Ancient Gnosticism: Traditions and Literature, examines the primary texts for Gnostic beliefs, including Christian Gnosticism, Hermetic Gnosticism, Mandaeanism, and Manicheanism.
He sees specific influences in Alhazen's physical optical theory, Chinese mechanical technologies leading to the perception of the world as a machine, the Hindu-Arabic numeral system, which carried implicitly a new mode of mathematical atomic thinking, and the heliocentrism rooted in in ancient Egyptian religious ideas associated with Hermeticism.
"Leonardo da Pistoia" searched for ancient Hermetic manuscripts throughout the regions surrounding Constantinople, Pera, and Galata.
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"Leonardo da Pistoia" was actually the pseudonym of Leonardo Alberti de Candia, a nobleman of the Alberti (family) of the counts of Prato in Pistoia.
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He conducted his investigations under the protection of the Byzantine podestà during the period of the joint Byzantine and Italian podestà and before the capture of Constantinople by Ottoman Turks in 1453.
In 1978 he founded the Hermetic Journal which he published until 1992 during which time he also started publishing the Magnum Opus Hermetic Sourceworks, a series of thirty nine editions (to 2011) of key source texts of the hermetic tradition.
Armando's visual work reflects influences from his reading of Hermetic and Sufi writings, philosophy and theology.
Aurea Catena Homeri oder, Eine Beschreibung von dem Ursprung der Natur und natürlichen Dingen (The Golden Chain of Homer, or A Description of Nature and Natural Things) is an hermetical book edited by Anton Josef Kirchweger in Leipzig in 1723.
Her two novels – Julian the Magician, dealing with the ambiguous relationship between the hermetic philosophies of the early Renaissance and Christianity; and King of Egypt, King of Dreams, which imaginatively reconstructed the life and religious reformation of Egyptian pharaoh Akhenaton – blend fantasy and history.
A permanent alternative spiritual culture of the West is outlined as Lundborg follows the impulse from Eleusis through the Neoplatonism and pantheism of the Middle Ages, the rise of hermeticism and esoteric alchemy during the Renaissance, up to the highly visible psychedelic scenes of the modern world.
A paperback reprint during the renewed rise of interest in hermeticism during the 1970s placed the book before a new generation of readers, and one offshoot of this was that a number of people, both within and without the Thelemic and Golden Dawn communities, claimed to have either undertaken the Abramelin operation in toto or to have successfully experimented with the magic squares and Abramelin oil formula found in the text.