Dean Winchester (to Sam): We can’t save Cas if we’re stuck in some hospital. Just like I can’t strap on a time machine, go back and tell Cain to shove that Mark up his ass. Or stop you from releasing the Darkness. Now have we made mistakes? Yes, hell yes. And we can analyze each and everyone one of them over a couple of frosty’s when we are old and farting sawdust and out of this room!
Dean Winchester: We track evil and kill it, the family business, is that it? Look at the tape, Sam. Evil tracks us. It nukes everything in our vicinity, our family, our friends, it’s time we put a proper name to what we really are and deal with it.
Sam Winchester: We are not evil. We’re far from perfect, but we are good. That thing on your arm is evil, but not you. Not me. You’ll never ever hear me say that you, the real you, is anything but good.
Crowley (to Rowena): All my life I wondered what I’d done to deserve a mother who refused to show love. I pained over it. I built my bloody kingdom on top of it. And then one day epiphany struck, my mother was incapable of loving anything. And then you showed in my dungeon, we communed and I began to realize you weren’t incapable of love, you were incapable of loving me.