When people see a ghost, it is in part illusion and in part they may really see it. When the inner eye sees, these outer eyes think that they see. But if they try to touch the ghost, there is nothing there. Thus the actual self of the spirit might show itself in the mist; but where, one may ask, does it get the clothes in which it appears, or anything that it may hold in its hand? The answer is that it is the impression of itself that the spirit holds which mirrors in the soul of the spectator, so that by his concrete illusion he feels its presence as positively as if he saw it with his own eyes.