Rick: Don't you sometimes wonder if it's worth all this? I mean what you're fighting for.
Victor Laszlo: You might as well question why we breathe. If we stop breathing, we'll die. If we stop fighting our enemies, the world will die.
Rick: Well, what of it? It'll be out of its misery.
Victor Laszlo: You know how you sound, Mr. Blaine? Like a man who's trying to convince himself of something he doesn't believe in his heart.