Superstition, bigotry and prejudice, ghosts though they are, cling tenaciously to life; they are shades armed with tooth and claw. They must be grappled with unceasingly, for it is a fateful part of human destiny that it is condemned to wage perpetual war against ghosts. A shade is not easily taken by the throat and destroyed.
He discovered wonderful stories, also, about jewels. In Alphonso's Clericalis Disciplina a serpent was mentioned with eyes of real jacinth, and in the romantic history of Alexander, the Conqueror of Emathia was said to have found in the vale of Jordan snakes 'with collars of real emeralds growing on their backs.' There was a gem in the brain of the dragon, Philostratus told us, and 'by the exhibition of golden letters and a scarlet robe' the monster could be thrown into a magical sleep and slain. According to the great alchemist, Pierre de Boniface, the diamond rendered a man invisible, and the agate of India made him eloquent. The cornelian appeased anger, and the hyacinth provoked sleep, and the amethyst drove away the fumes of wine. The garnet cast out demons, and the hydropicus deprived the moon of her color. The selenite waxed and waned with the moon, and the meloceus, that discovers thieves, could be affected only by the blood of kids. Leonardus Camillus had seen a white stone taken from the brain of a newly killed toad, that was a certain antidote against poison. The bezoar, that was found in the heart of the Arabian deer, was a charm that could cure the plague. In the nests of Arabian birds was the aspirates, that, according to Democritus, kept the wearer from any danger by fire.
We may be through with the past, but the past is not through with us. Ideas of the Stone Age exist side by side with the latest scientific thought. Only a fraction of mankind has emerged from the Dark Ages, and in the most lucid brains, as Logan Pearsall Smith has said, we come upon nests of woolly caterpillars. Seemingly sane men entrust their wealth to stargazers and their health to witch doctors. Giant planes throb through the stratosphere, but half their passengers are wearing magic amulets and are protected from harm by voodoo incantations. Hotels boast of express elevators and a telephone in every room, but omit thirteen from all floor and room numbers lest their guests be ill at ease.