If she take advantage of the moment when a business appointment, which you cannot fail to keep, detains you, in order to obtain your tacit permission to some meditated expedition; if in order to obtain that permission she displays all the witcheries of those cajoleries in which women excel and whose powerful influence you ought already to have known, well, well, the professor implores you to allow her to win you over, while at the same time you sell dear the boon she asks; and above all convince this creature, whose soul is at once as changeable as water and as firm as steel, that it is impossible for you from the importance of your work to leave your study. But as soon as your wife has set foot upon the street, if she goes on foot, don’t give her time to make fifty steps; follow and track her in such a way that you will not be noticed. It is possible that there exist certain Werthers whose refined and delicate souls recoil from this inquisition. But this is not more blamable than that of a landed proprietor who rises at night and looks through the windows for the purpose of keeping watch over the peaches on his _espaliers_. You will probably by this course of action obtain, before the crime is committed, exact information with regard to the apartments which so many lovers rent in the city under fictitious names. If it happens [which God forbid!] that your wife enters a house suspected by you, try to find out if the place has several exits. Should your wife take a hack, what have you to fear? Is there not a prefect of police, to whom all husbands ought to decree a crown of solid gold, and has he not set up a little shed or bench where there is a register, an incorruptible guardian of public morality? And does he not know all the comings and goings of these Parisian gondolas? One of the vital principles of our police will consist in always following your wife to the furnishers of your house, if she is accustomed to visit them. You will carefully find out whether there is any intimacy between her and her draper, her dressmaker or her milliner, etc. In this case you will apply the rules of the conjugal Custom House, and draw your own conclusions. If in your absence your wife, having gone out against your will, tells you that she had been to such a place, to such a shop, go there yourself the next day and try to find out whether she has spoken the truth. But passion will dictate to you, even better than the Meditation, the various resources of conjugal tyranny, and we will here cut short these tiresome instructions. 5. OF THE BUDGET. In outlining the portrait of a sane and sound husband (See _Meditation on the Predestined_), we urgently advise that he should conceal from his wife the real amount of his income.