You want to know the definition of insanity? Doing the same ... - Avengers Tony Stark

"You want to know the definition of insanity? Doing the same thing twice and expecting different results."

Avengers Tony Stark Wisdom

More from Avengers Tony Stark

"I'm not a genius. I'm just a man in a suit."

"Sometimes you gotta run before you can walk."

"The world's always ending. The end of the line, the end of the road."

"I have a plan. Attack."

"I'm not angry, I'm just disappointed."

"The best things in life are free."

"You can't have everything in life, but you can have what matters most."

"A woman's intuition is rarely wrong."