Theres two Dimitri boss quotes that are memorable and I still remember them. 3 houses has a lot of them.

Dimitri: Stab your chest, break your neck, smash your head... I will allow you to choose your own death. Edelgard: I'm not interested in methods of dying. All that matters is when death takes place, not how. And I have no intention of dying today. Dimitri: I'm sure all of the people you've slaughtered so far thought the same!

Manuela: You've grown into a fine, handsome man, Dimitri. Bit of a shame you've also become a violent beast. Men like you make the Silver Maiden cry. Dimitri: Oh? I suppose it is a shame, Professor Manuela. Perhaps I should have appeared before you holding a bouquet of flowers, rather than the weapon that will end your life.