Where Mr. Romney most fell short, though, was in his failure to recognize that America is composed of citizens not only of different faiths but of no faith at all and that the genius of America is to treat them all with equal dignity. "Freedom requires religion, just as religion requires freedom," Mr. Romney said. But societies can be both secular and free. The magnificent cathedrals of Europe may be empty, as Mr. Romney said, but the democracies of Europe are thriving.

"Americans acknowledge that liberty is a gift of God, not an indulgence of government," Mr. Romney said. But not all Americans acknowledge that, and those who do not may be no less committed to the liberty that is the American ideal.