Gaspar Schott's grimacing centaur looks like he may topple over from the weight of the world on his shoulders...or is that the weight of the heavens? When the centaurs of the Forbidden Forest are first introduced in Harry Potter and the Philosopher's Stone, they seem too consumed with star-gazing to worry much about the big school on the hill. That changes when the centaur Firenze is coaxed to teach Divination. Schott, a German Jesuit (Athanasius Kircher was Dumbledore to his Harry) published his Physica curiosa (1662), an astonishing compilation of stories and illustrations about strange births and fantastic creatures.