"What exactly did you mean?" Peter said. "You want us to be friends without relating to the Marauders, even though I'm a Marauder, but I'm not. How do you think I feel when I hear that I'm not good enough to be a Marauder, not loved enough, because I'm what? Not rich enough? Not pretty enough? Not what enough? Tell me, Sirius, because I don't understand why I was never enough."
Peter snorted. "And now the self pity. Next the puppy dog face. Finally turn yourself into a dog. Isn't that how it goes when things don't go the way you like? Because you're a bloody coward. You're only brave when you have to fight Death Eaters, but when life disappoints you, when you have to deal with problems, then you make it all about you, and you avoid the problem. Guess what, Sirius? This isn't going away, because there are twenty-five of us."