How we cite our quotes: (Part.Letter.Paragraph)
Quote #1
The hope of vengeance soothes my soul. (1.2.2)
Some people seek serenity through prayer or meditation. Others through CrossFit. Madame de Merteuil? Through revenge. Having a lover actually leave her for another is intolerable because it challenges her entire idea of herself. Something's just not right in her world, so she has to make it right and prove that she's still in control.
Quote #2
Oh yes, certainly her daughter must be seduced. But that will not be enough: she must be ruined too. (1.44.16)
Don't you love how he casually tosses that off? No big deal. Valmont is furious with Madame de Volanges, but he won't target Madame de Volanges directly. He'll repay her speaking against him by attacking the person she loves most: her daughter, Cécile.
Quote #3
Reconciliations take us nowhere. (2.54.4)
This line alone tells you everything about the Marquise. And about Valmont, who no doubt agrees with her. These two make war when they are wronged. Forgiveness isn't in their vocabulary. Things are valued inasmuch as they get you somewhere. Apparently revenge does more for you than reconciliation.