Who said "I think that might be the piece I'm missing."?

This quote is attributed to Iron Man.

I think that might be the piece I'm missing. - Iron Man

"I think that might be the piece I'm missing."

Iron Man Creativity

"I am Iron Man."

"Genius, billionaire, playboy, philanthropist."

"I'm not the one who should be worried."

"This is the most important thing I've ever done."

"When life gives you lemons, make something beautiful."

"Creativity knows no bounds."

"Creativity is the expression of the soul."

"I'm making this up as I go."