Much as I would tend my manor in peace, peace needs the consent of all, while one alone may raise a war. I swore an oath to protect the defenseless and punish peace-breakers, and that includes peace-breaking Herrenfolk. Your priests say to forgive your enemy, and that is well, or revenge follows revenge until eternity. But between a man who will stop at nothing and one who will hesitate at anything, the advantage is generally to the former. The pagans had right, too. It is a false peace to be overforgiving. Your enemy may read forbearance as weakness and so be drawn to strike.

Chapter XIV (p. 252) - Eifelheim (2006)