“In many parts of the world, ghosts are not considered to be a creation of local folklore, but a fact of life. In China the dead are understood to co-exist with the living, a belief which gave rise to the practice of ancestor worship, while in South America the deceased are honoured with annual festivals known as the Day of the Dead which suggests that the material world and the spirit world might not be as distinct as we might like to believe. In the Eastern and Asiatic religions it is believed that death is not the end, but simply a transition from one state of being to another. The Hindu Upanishads, for example, liken each human soul to a lump of salt taken from the ocean which must ultimately return to the source.”