I love this quote. Not because it's from a comic book movie or from RDJ, but because it fits into so many different aspects of life. Sometimes, looking before you leap defeats the whole purpose or reason you decided to leap in the first place.
That's why Tony's better than Batman. Correction. In my opinion that makes batman better because even though the joker killed someone he loved, he is still willing to give him life. Arguements? Please do.