“There is a great deal of debate among writers with regards to dragons: do animals of this sort actually exist in nature, or, as is often the case in many other things, can they only be found in fables?”
These words come from the 17th century German Jesuit Athanasius Kircher and his 1638 book Mundus subterraneus (Subterranean World) which argued not only that the Earth is hollow, but that it’s inhabited by dragons which he believed were extremely rare, but nevertheless natural animals. Kircher’s inquiry into the putative reality of dragons is a major theme throughout The Penguin Book of Dragons (2021), edited by historian Scott G. Bruce of Fordham University.