Who said "Everything I do is for a reason."?

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

Everything I do is for a reason. - Iron Man (The Avengers)

"Everything I do is for a reason."

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."