The Hermetica are a body of theological-philosophical texts written in late antiquity, but long believed to be much older. Their supposed author, Hermes Trismegistus, was thought to be a contemporary of Moses, and the Hermetic philosophy was regarded as an ancient theology, parallel to the received wisdom of the Bible. This first English translation based on reliable texts, together with Brian P. Copenhaver’s comprehensive introduction, provide an indispensable resource to scholars in ancient philosophy and religion, early Christianity, Renaissance literature, and history, the history of science, and the occultist tradition in which the Hermetica have become canonical texts.