Perhaps the biggest takeaway from these essays is that grimoires were not only written by witches. Indeed, in the Middle Ages many of them were written by clerics and monks. They were avidly used by doctors, as science likely has its roots in magic rather than in some sudden enlightenment that matter is all there is. Medicine was still beholden to Aristotle, Hippocrates, and Galen. Humors and stars could make you unwell, and the wise physician would do well to pay attention to magic as well. Today we’re too sophisticated for that, but we still call the unexplained the placebo effect.
Although the church became the great enemy of magic, it was also one of its main sources. The Mass, with transubstantiation, seemed alchemical. Miracles of healing, known throughout the Bible, suggested that the improbable was indeed possible. A number of grimoires contained instructions to work such wonders. One of the most vehemently condemned was a book informing how to attain the beatific vision—a worthy enough goal—but it did so in a way that circumvented the power of the church. Garden variety magic was also available, of course, as were recipes calling for brain of black cat and blood of bat. Witches, after all, were mainly sought out by the church. Those with power are not easily compelled to relinquish it. It should surprise no one then that magic continues to thrive.