Dean: The Darkness.
Sam: What the hell is that?
Dean: What does it sound like? Does it sound like a good thing?

This is madness, Dean!

Sam

Truth is when I left, I thought the only way out was my death. I was wrong, Sam. It's yours.

Dean

A long, long time ago, there once lived an evil bitch.

Crowley

We’re far from perfect. But we are good.

Sam

Brother, I’m done.

Dean

You’re not in my contacts list.

Castiel

I want you to know that the only reason you're alive is because I allowed it.

Crowley

Will you just die already?

Sam

You can call me Ash.

Dean

I’d be happy to kill her, she just called me a fish.

Castiel

Is that you talking or the Mark?

Sam

Supernatural Season 10 Quotes

Now I realize that there is no righteous path, it's just people trying to do their best in a world where it is far too easy to do your worst.

Castiel

Kick it in the ass.

Bobby