The Declaration is not a relic. It is a warning.

A century ago in Philadelphia, July 5, 1926, Calvin Coolidge gave America the speech it needed on its 150th birthday. He did not flatter the country. He did not scold it. He reminded Americans that the Declaration was not a museum piece or a political slogan, but a spiritual document rooted in permanent truths. On our 250th birthday, his warning looks less like history than prophecy. Read this excerpt slowly. Then ask whether we still believe it. Editor’s note: This excerpt has been edited and condensed.

We meet to celebrate the birthday of America. The coming of a new life always excites our interest. Although we know in the case of the individual that it has been an infinite repetition reaching back beyond our vision, that