Who said "You're only as good as the next thing you do."?

This quote is attributed to Tony Stark / Iron Man.

You're only as good as the next thing you do. - Tony Stark / Iron Man

"You're only as good as the next thing you do."

Tony Stark / Iron Man Work

"I am Iron Man."

"Genius, billionaire, playboy, philanthropist."

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

"The difference between you and me? I'm not afraid."

"Hard work never killed anybody."

"Work with purpose and integrity."

"Hard work pays off in the end."

"A man's gotta do what a man's gotta do."