Justice League Unlimited, Season 1

Superman:
Each of you brings something different to the table. Strength. Speed. Stealth. Whatever. But we're all equal in at least one way: Each of us is willing to make the sacrifices a hero needs to make, even the ultimate one. Since there are so many of us, we have a chance to do more than just put out fires, both literal and figurative. We can be proactive. We can do some real good in the world. But we're going to have to be organized. J'onn'll be up here keeping an eye on everything. He'll be the one to decide whose going where and when. I know a lot of you are used to making those decisions for yourself, but from now on we have to be more coordinated than that. We can't be cowboys any more... or cowgirls.