of all schools registered and unregistered, astrologers, astronomers who tell us that the sun is nearly a hundred million miles away and that Betelgeuse is ten times as big as the whole universe, physicists who balance Betelgeuse by describing the incredible smallness of the atom, and a host of other marvel mongers whose credulity would have dissolved the Middle Ages in a roar of sceptical merriment. In the Middle Ages people believed that the earth was flat, for which they had at least the evidence