All that is necessary is that our taste for her should become exclusive. And that condition is fulfilled so soon as—in the moment when she has failed to meet us—for the pleasure which we were on the point of enjoying in her charming company is abruptly substituted an anxious torturing desire, whose object is the creature herself, an irrational, absurd desire, which the laws of civilised society make it impossible to satisfy and difficult to assuage—the insensate, agonising desire to possess her.