Explore Alan Greenspan's controversial legacy as a central banker whose policies shaped the economy, leading to both moderation and crisis.

Financial historian James Grant had a withering look at Alan Greenspan’s epic run at the Fed just before he stepped down in 2006—and a few short years before the Great Recession.

A market maestro to some, he was criticized by others—including himself—for having too much faith in self-regulating markets.

Alan Greenspan, the influential economist who led the US Federal Reserve for almost 19 years and helped steer the world's largest economy through periods of growth and crisis, has…