Political constitutions, hammered out by imperfect human beings in periods of intense political controversy, are always compromises with injustice. What makes the U.S. Constitution legitimate, argues this daring book, is Americans’ enduring faith that the Constitution’s promises can someday be redeemed, and the constitutional system be made “a more perfect union.”

A leading constitutional theorist, Balkin argues eloquently that the American constitutional project is based in faith, hope, and a narrative of shared redemption. Our belief that the Constitution will deliver us from evil shows in the stories we tell one another about where our country came from and where it is headed, and in the way we use these historical touchstones to justify our fervent (and opposed) political creeds. Because Americans have believed in a story of constitutional redemption, we have assumed the right to decide for ourselves what the Constitution means, and have worked to persuade others to set it on the right path. As a result, constitutional principles have often shifted dramatically over time. They are, in fact, often political compromises in disguise.

What will such a Constitution become? We cannot know. But our belief in the legitimacy of the Constitution requires a leap of faith—a gamble on the ultimate vindication of a political project that has already survived many follies and near-catastrophes, and whose destiny is still over the horizon.

Originalism and living constitutionalism, so often understood to be diametrically opposing views of our nation’s founding document, are not in conflict—they are compatible. So argues Jack Balkin, one of the leading constitutional scholars of our time, in this long-awaited book. Step by step, Balkin gracefully outlines a constitutional theory that demonstrates why modern conceptions of civil rights and civil liberties, and the modern state’s protection of national security, health, safety, and the environment, are fully consistent with the Constitution’s original meaning. And he shows how both liberals and conservatives, working through political parties and social movements, play important roles in the ongoing project of constitutional construction.

By making firm rules but also deliberately incorporating flexible standards and abstract principles, the Constitution’s authors constructed a framework for politics on which later generations could build. Americans have taken up this task, producing institutions and doctrines that flesh out the Constitution’s text and principles. Balkin’s analysis offers a way past the angry polemics of our era, a deepened understanding of the Constitution that is at once originalist and living constitutionalist, and a vision that allows all Americans to reclaim the Constitution as their own.