https://en.wikipedia.org/wiki/Elizabeth_I
To 21st-century eyes, [court astrologer John] Dee's activities straddle magic and modern science, but the distinction would have meant nothing to him. He was invited to lecture on Euclidean geometry at the University of Paris while still in his early twenties. He was an ardent promoter of mathematics, a respected astronomer and a leading expert in navigation, who trained many who would conduct England's voyages of discovery.
Meanwhile, he immersed himself in sorcery, astrology and Hermetic philosophy. Much effort in his last 30 years went into trying to commune with angels, so as to learn the universal language of creation and achieve a pre-apocalyptic unity of mankind.