American politics are as fractured and partisan as they have ever been and liberalism is in greater peril than at any time in recent history. Conservatives treat it as an epithet, and even some liberals have confused it with sentimentality and socialism. But Paul Starr, Pulitzer Prize-winning author and one of America's leading intellectuals, claims that, properly understood, liberalism is a sturdy public philosophy, deeply rooted in our traditions, capable of making America a freer and more secure country.