But since the art of creating a situation and of transforming it, by the introduction of natural incidents, constitutes genius; since the return to virtue of a woman, whose foot has already left some tracks upon the sweet and gilded sand which mark the pathway of vice, is the most difficult to bring about of all denouements, and since genius neither knows it nor teaches it, the practitioner in conjugal laws feels compelled to confess at the outset that he is incapable of reducing to definite principles a science which is as changeable as circumstances, as delusive as opportunity, and as indefinable as instinct. If we may use an expression which neither Diderot, d'Alembert nor Voltaire, in spite of every effort, have been able to engraft on our language, a conjugal catastrophe _se subodore_ is scented from afar; so that our only course will be to sketch out imperfectly certain conjugal situations of an analogous kind, thus imitating the philosopher of ancient time who, seeking in vain to explain motion, walked forward in his attempt to comprehend laws which were incomprehensible. A husband, in accordance with the principles comprised in our Meditation on _Police_, will expressly forbid his wife to receive the visits of a celibate whom he suspects of being her lover, and whom she has promised never again to see. Some minor scenes of the domestic interior we leave for matrimonial imaginations to conjure up; a husband can delineate them much better than we can; he will betake himself in thought back to those days when delightful longings invited sincere confidences and when the workings of his policy put into motion certain adroitly handled machinery. Let us suppose, in order to make more interesting the natural scene to which I refer, that you who read are a husband, whose carefully organized police has made the discovery that your wife, profiting by the hours devoted by you to a ministerial banquet, to which she probably procured you an invitation, received at your house M. A----z. Here we find all the conditions necessary to bring about the finest possible of conjugal catastrophes. You return home just in time to find your arrival has coincided with that of M. A----z, for we would not advise you to have the interval between acts too long. But in what mood should you enter? Certainly not in accordance with the rules of the previous Meditation. In a rage then? Still less should you do that. You should come in with good-natured carelessness, like an absent-minded man who has forgotten his purse, the statement which he has drawn up for the minister, his pocket-handkerchief or his snuff-box. In that case you will either catch two lovers together, or your wife, forewarned by the maid, will have hidden the celibate. Now let us consider these two unique situations.