"I think [Bruce and Tony] have a really interesting relationship because Tony Stark is who Bruce Banner wishes he could have been in some regard. He’s this renegade scientist who used revolutionary ideas and took huge risks…and in some ways experimented on himself, with himself, and because of that ends up being this incredibly powerful, well-liked, well-loved superhero. And Bruce Banner, on the other hand, did exactly the same thing and he’s hunted and haunted and on the run and miserable. And so I think that Benner looks at him as like, ‘Oh, wow, he actually made it work.’ And in some ways they speak the same language, they’re both scientists. And so Tony Stark does a lot to bring Banner to a place of, like, thinking about using the Hulk for good by embracing the Hulk, by actually being part of the team. There’s a really good interconnectedness between the two."
- Mark Ruffalo discussing The Avengers. (via vengerturtle)