Egypt it is not considered proper to sweep out a house at night, lest in doing so you should knock against a jinnee, who might avenge the insult.(306) (M80) The earliest of the Greek philosophers, Thales, held that the world is full of gods or spirits;(307) and the same primitive creed was expounded by one of the latest pagan thinkers of antiquity. Porphyry declared that demons appeared in the likeness of animals, that every house and every body was full of them, and that forms of ceremonial purification, such as beating the air and so forth, had no other object but that of driving away the importunate swarms of these invisible but dangerous beings. He explained that evil spirits delighted in food, especially in blood and impurities, that they settled like flies on us at meals, and that they could only be kept at a distance by ceremonial observances, which were directed, not to pleasing the gods, but simply and solely to beating off devils.(308) His theory of religious purification seems faithfully to reflect the creed of the savage on this subject,(309) but a philosopher is perhaps the last person whom we should expect to find acting as a mirror of savagery. It is less surprising to meet with the same venerable doctrine, the same world-wide superstition in the mouth of a mediaeval abbot; for we know that a belief in devils has the authority of the founder of Christianity and is sanctioned by the teaching of the church. No Esquimau on the frozen shores of Labrador, no Indian in the sweltering forests of Guiana, no cowering Hindoo in the jungles of Bengal, could well have a more constant and abiding sense of the presence of malignant demons everywhere about him than had Abbot Richalm, who ruled over the Cistercian monastery of Schönthal in the first half of the thirteenth century. In the curious work to which he gave the name of _Revelations_, he set forth how he was daily and hourly infested by devils, whom, though he could not see, he heard, and to whom he imputed all the ailments of his flesh and all the frailties of his spirit. If he felt squeamish, he was sure that the feeling was wrought in him by demoniacal agency. If puckers appeared on his nose, if his lower lip drooped, the devils had again to answer for it; a cough, a cold in the head, a hawking and spitting, could have none but a supernatural and devilish origin. If, pacing in his orchard on a sunny autumn morning, the portly abbot stooped to pick up the mellow fruit that had fallen in the night, the blood that mounted to his purple face was sent coursing thither by his invisible foes. If the abbot tossed on his sleepless couch, while the moonlight, streaming in at the window, cast the shadows of the stanchions like black bars on the floor of his cell, it was not the fleas and so forth that kept him awake—oh no! “Vermin,” said he sagely, “do not really bite”; they seem to bite indeed, but it is all the work of devils.