Who said "I believe we can win."?

This quote is attributed to Iron Man (The Avengers).

I believe we can win. - Iron Man (The Avengers)

"I believe we can win."

Iron Man (The Avengers)

"I am Iron Man."

"Genius, billionaire, playboy, philanthropist."

"If you're nothing without the suit, then you shouldn't have it."

"I've successfully privatized world peace."