Chalmers smiled wanly. "I know that you think me insane," he said. "You have a shrewd but prosaic mind, and you cannot conceive of an entity that does not depend for its existence on force and matter. But did it ever occur to you, my friend, that force and matter are merely the barriers to perception imposed by time and space? When one knows, as I do, that time and space are identical and that they are both deceptive because they are merely imperfect manifestations of a higher reality, one no longer seeks in the visible world for an explanation of the mystery and terror of being."