Heinrich Cornelius Agrippa Von Nettesheim represents one of the first and most famous philosophers of occultism in the Renaissance. His work De Occulta Philosophia has been one of the most important texts in the Western magical tradition for almost 500 years. The three books of occult philosophy bring together a multitude of sources from the classical, medieval, and Renaissance periods that explain the world of magic. Each of the three books explains one type of magic and the world associated with it. Thus, the first deals with natural magic, the second with celestial magic and the third with divine magic, thus systematically explaining philosophy, logic, magic, astrology and ceremonies. With his work, Agrippa aims at a complete reformation of magic by invoking ancient philosophy and rejecting medieval intellectual heritage. An interesting turning point of Agrippa's philosophical work, however, is his second work, De Vanitate, in which he refutes much of what is interpreted in De Occulta Philosophia, rejects magic, and claims that truth is based on faith and the word of God.