René Adolphe Schwaller de Lubicz (December 30, 1887 – December 7, 1961), born René Adolphe Schwaller in Alsace-Lorraine, was a French Egyptologist and mystic who popularized the idea of sacred geometry in ancient Egypt during his study of the art and architecture of the Temple of Luxor in Egypt, and his subsequent book The Temple In Man.
Giuliano M. Kremmerz (1861–1930), born Ciro Formisano, was an Italian alchemist working within the tradition of hermeticism.
In 1896, Kremmerz founded the Confraternita Terapeutica e Magica di Myriam (Therapeutic and Magic Brotherhood of Myriam).
Patrick Flanagan (October 11, 1944 – December 19, 2019) was an American New Age author and inventor.
Flanagan wrote books focused on Egyptian sacred geometry and Pyramidology.
In 1958, at the age of 14, while living in Bellaire, Texas, Flanagan invented the neurophone, an electronic device that claims to transmit sound through the body's nervous system directly to the brain. It was patented in the United States in 1968 (Patent #3,393,279). The invention earned him a profile in Life magazine, which called him a "unique, mature and inquisitive scientist."