Dangerous Liaisons by Pierre Choderlos de Laclos

Return, my dear Viscount, return! How can you think of idling your days with an old aunt, whose fortune is already settled on you! Set out the moment you receive this letter, for I want you much. A most enchanting idea has just struck me, and I wish to confide the execution of it to you.

This hint should be sufficient, and you should think yourself so highly honoured by my choice, as to fly to receive my orders on your knees: but my favours are thrown away on one who no longer sets a value on them; and you presume upon my kindness, where the alternative must be eternal hatred, or excessive indulgence. I will acquaint you with my scheme; but you, like a true knight errant, must first swear to undertake no other adventure until this is achieved. It is worthy a hero. You will at once satiate love and revenge. It will be an additional exploit to your memoirs; yes, your memoirs, for I will have them published, and I will undertake the task. But to return to what more immediately concerns us. Madame de Volanges intends to marry her daughter: it is yet a secret; but she yesterday informed me of it. And whom do you think she has chosen for her son-in-law? Count Gercourt. Who could have thought I should have been allied to Gercourt? I am provoked beyond expression at your stupidity! Well, don't you guess yet? Oh, thou essence of dullness! What, have you then pardoned him the affair of Madame the Intendante? And I, monster! 3 have I not more reason for revenge? But I shall resume my temper; the prospect of retaliation, recalls my serenity.