I think one of "their own"- former Goldman Sachs partner and current chairman of the commodity futures trading commission Gary Gensler said it best of his time on wall st:
"I am not smarter than other people, I didn't invent anything or build anything or create lots of good jobs in America...There are lots of people who are hurting across the country and to say that "no one knew" or "no one is responsible" is not right. The people who helped create the game, and I am one of them, should say "I'm sorry." and start making amends."
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