Chaos illustrated in Utriusque Cosmi by Robert Fludd, 1817. Fludd also known as Robertus de Fluctibus (1574 1637), was a prominent English Paracelsian physician with both scientific and occult interests. He is remembered as an astrologer, mathematician, cosmologist, Qabalist and Rosicrucian apologist. Fludd is best known for his compilations in occult philosophy. Fludd's philosophy is presented in Utriusque Cosmi, Maioris scilicet et Minoris, metaphysica, physica, atque technica Historia (The metaphysical, physical, and technical history of the two worlds, namely the greater and the lesser, published in Germany between 1617 and 1621)