Question for the day: if liberalism isn’t dead, then why are autopsies performed so regularly? In the latest examination of the much-probed cadaver, the New Republic’s editor-in-chief, Martin Peretz, recalls that John Kenneth Galbraith, in the early 1960s, pronounced American conservatism dead, citing as heavy evidence that conservatism was “bookless” or bereft of new ideas. Peretz writes, “It is liberalism that is now bookless and dying.” Liberals, he says, are not inspired by any vision of the good society; the liberal agenda consists of wanting to spend more, while conservatives want to spend less. And the lack of new ideas...