First comes a full stomach, then comes ethics. - The Three Penny Opera, Bertolt Brecht Edit: Let's add a second one, which fits here - "You have to kill your n

First comes a full stomach, then comes ethics. - The Three Penny Opera, Bertolt Brecht Edit: Let's add a second one, which fits here - "You have to kill your neighbor to survive. It's selfishness that keeps a man alive."