No doubt the secret of what may be called a superstition of the omen, which exists in the East and sometimes also in the West, is in the impression. For instance, there have been beliefs that if you hear the sound of a certain bell there will be a death in your surroundings, or if you see such a person good luck or bad luck will come to your family. People have sometimes believed blindly, and gone on believing for many, many years. Intellectual ones thought there was nothing in those superstitions and have ignored them. But at the end of the study one will find that the secret of all those superstitions is nothing but impressions, that it is only that whatever the mind has taken through the senses has its effect, not upon the body alone, but also upon one's affairs.