 More knew, from the time he wrote his Antidote Against Atheism, that Descartes’s philosophy was being appropriated by atheists for their own purposes. It must have been with some dismay that he realised this was a rising tide which his own writings did nothing to quell. And then, as if Cartesian atheism and Hobbesianism were not enough, he heard in the 1670s of new threats to sound religion. One of these was Spinozism, which appalled More as much as it did every other devout believer. The other atheistic threat, dubbed hylozoism by More, was represented by the much less well known English medical writer, Francis Glisson (1597–1677), formerly Regius professor of Physick (i.e. medicine) at Cambridge.