Hermes Mercurius Trismegistus
 
From Historia Deorum Fatidicorum.

Master of all arts and sciences, perfect in all crafts, Ruler of the Three Worlds, Scribe of the Gods, and Keeper of the Books of Life, Thoth Hermes Trismegistus—the Three Times Greatest, the "First Intelligencer" —was regarded by the ancient Egyptians as the embodiment of the Universal Mind. While in all probability there actually existed a great sage and educator by the name of Hermes, it is impossible to extricate the historical man from the mass of legendary accounts which attempt to identify him with the Cosmic Principle of Thought. MPH.