**Between 1617 and 1621 the English physician and polymath Robert Fludd published his masterwork Utriusque Cosmi, a book split into two volumes and packed with over 60 intricate engravings. Urszula Szulakowska explores the philosophical and theological ideas behind the extraordinary images found in the second part of the work.** Robert Fludd was a respected English physician (of Welsh origins) employed at the court of King James I of England. He was a prolific writer of vast, multi-volume encyclopaedias in which he discussed a universal range of topics from magical practices such as alchemy, astrology, kabbalism and fortune-telling, to radical theological