The physician and Hermetic philosopher Robert Fludd (known in Latin as Robertus de Fluctibus) is one of the best-known figures of early English occultism. Although John Dee was arguably the most important Elizabethan occultist, Robert Fludd was premier among Jacobeans. He was the last English philosopher to extend and embellish the Platonic and Neoplatonic tradition even in the face of the advancing rational science. Popular knowledge of his work rests largely on the often reprinted and intricate copperplate engravings in his books, illustrations that have been lauded as the most splendid ever appended to philosophical publications. Also a respected London physician and chemist, Fludd advocated vaccination 150 years before it became a reality and invented a variety of mechanisms and procedures, including a new method for steel production that was patented under James I in 1620. Although not regarded as a rhetorician, Fludd wrote a work titled "De animae memorativae...