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Roger Bacon held that three classes of substance were capable of magic: the herbal, the mineral, and the verbal. With their leaves of fiber, their inks of copperas and soot, and their words, books are an amalgam of the three.
Roger Bacon held that three classes of substance were capable of magic: the herbal, the mineral, and the verbal. With their leaves of fiber, their inks of copperas and soot, and their words, books are an amalgam of the three.
