The Count of Monte Cristo
"Have I ever told you, when you have done your job as a Royalist and had the head cut off one of our people: 'My son, you have committed murder'? No, I have said: 'Very well, Monsieur, you have fought and won, but tomorrow we shall have our revenge.'"
"Father, beware, our revenge will be terrible when we take it." (12.39-40)
He decided it was human hatred and not divine vengeance that had plunged him into this abyss. He doomed these unknown men to every torment that his inflamed imagination could devise, while still considering that the most frightful were too mild and, above all, too brief for them: torture was followed by death, and death brought, if not repose, at least an insensibility that resembled it. (15.8)
[Abbé Faria:] "I regret having helped you in your investigation and said what I did to you," he remarked.
"Why is that?" Dantès asked.
"Because I have insinuated a feeling into your heart that was not previously there: the desire for revenge." (17.193-195)