Everard Digby (born c. 1550) was an English academic theologian, expelled as a Fellow of St John's College, Cambridge for reasons that were largely religious. He is known as the author of a 1587 book, written in Latin, that was the first work published in England on swimming; and also as a philosophical teacher, writer and controversialist. The swimming book, De Arte Natandi, was a practical treatise following a trend begun by the archery book Toxophilus of Roger Ascham, of Digby's own college.[1]
According to Eugene D. Hill, in Digby's Theoria Analytica of 1579,
his intuition of many 'mysteries' in Aristotle's Posterior Analytics leads him to develop a theory which conflates technical logic with a vast mass of Neoplatonic and Cabalistic lore taken (not always with acknowledgement) from Ficino's translation of Plotinus and from the Cabalistic dialogues of Johannes Reuchlin.[2]