Complex sentence: Robert Fludd, also known as Robertus de Fluctibus (17 January 1574--8 September 1637) was a prominent English Paracelsian physician, astrologer, mathematician, cosmologist, Qabalist, Rosicrucian apologist.
Split into simpler sentences: Robert Fludd, also known as Robertus de Fluctibus (17 January 1574--8 September 1637) was a prominent English Paracelsian physician. He is remembered as an astrologer, mathematician, cosmologist, Qabalist, and Rosicrucian apologist.