" After listening to all this information we came to the conclusion that the world of Sir John Mandeville has by no means disappeared, that the world of two-headed men and flying serpents has not disappeared. And, indeed, while we were away the flying saucers appeared, which do nothing to overturn our thesis. And it seems to us now the most dangerous tendency in the world is the desire to believe a rumor rather than to pin down a fact. "
― John Steinbeck , A Russian Journal