Who said "Nothing is impossible when you have the will to do it."?

This quote is attributed to Iron Man.

Nothing is impossible when you have the will to do it. - Iron Man

"Nothing is impossible when you have the will to do it."

Iron Man Imagination

"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."

"Imagination is more powerful than knowledge."

"The world is full of wonders if you know where to look."

"You have the imagination of a child, Lucy"

"The world is full of mysteries waiting to be solved."