Mommie Dearest (1981)

"Certain ghosts feel little of that attraction of haunting which so powerfully influences many others, for these former leave upon the earth a physical manifestation in a human being. Sometimes this counterpart appears among their descendants; but when this is not so, another being is chosen and possessed, though perhaps this one is never wholly alien in a physical sense. The chosen one looks henceforth to the ghost as to an illustrious ancestor, and draws from it authority and inspiration. 

The chosen being may be singled out in various ways, either before or after the death of the possessor. It may happen that those two halves of Plato's sphere cannot join on earth, but must be parted by a dividing dimension before they can work as one, the earth too narrow to hold them. One of them has to die. They struggle to decide which is to be the victim, and at last one of them kills the other. The survivor acts in self-defence, and there are this many murders and suicides that go unrecognized by law. But this being feels, mixed with pain and remorse, a subtle triumph, for it knows that from now onwards it drinks life at a double spring. That very identity which separated it from its stirrer during the day, at night draws them together. They are undivided but working in a manner both hidden and expressed... I am not here any longer, I am dead, it is only my unhappy ghost... I am lying in a small graveyard at the edge of a thirsty plain, the dust is on my eyelids I cannot see, the earth is in my nostrils I cannot breathe, the pebbles are in my ears I cannot hear, the stones are at my feet I cannot move. We two have lain there a single corpse under rocky hills since the beginning of time, and one ghost is still walking, and one has ceased to walk."

Goose of Hermogenes, Ithell Colquhoun