From Bloomberg:

Former Federal Reserve Chairman Alan Greenspan said a “once-in-a-century credit tsunami” has engulfed financial markets and conceded that his free-market ideology shunning regulation was flawed.

“Yes, I found a flaw,” Greenspan said in response to grilling from the House Committee on Oversight and Government Reform. “That is precisely the reason I was shocked because I’d been going for 40 years or more with very considerable evidence that it was working exceptionally well.”