"Oh, by far," Greenspan said, when asked if the situation was the worst he had seen in his career. "There's no question that this is in the process of outstripping anything I've seen and it still is not resolved and still has a way to go and, indeed, it will continue to be a corrosive force until the price of homes in the United States stabilizes. That will induce a series of events around the globe which will stabilize the system."

Appearing on ABC's This Week, Greenspan would not definitively say whether the government should come to the rescue of Lehman Brothers, which has been forced to consider a possible sale after its stock shares plunged drastically this past week. Instead he called the situation surrounding the investment bank -- and the bailout that occurred this past spring of Bear Stearns -- as a "once in a half century, probably once in a century type of event."