Who said "We need to be careful with what we create."?

This quote is attributed to Bruce Banner (Age of Ultron).

We need to be careful with what we create. - Bruce Banner (Age of Ultron)

"We need to be careful with what we create."

Bruce Banner (Age of Ultron)

"I'm not a hero. I'm a scientist."

"The problem isn't that we need to be smarter. The problem is that we need to be better."

"I can't control it. When I get angry, everything changes."

"We create our own demons."