A brilliant new approach to the Constitution and courts of the United States by Supreme Court Justice Stephen Breyer.For Justice Breyer, the Constitution s primary role is to preserve and encouragewhat he calls active liberty : citizen participation in shaping government and its laws. As this book argues, promoting active liberty requires judicial modesty and deference to Congress; it also means recognizing the changing needs and demands of the populace. Indeed, the Constitution s lasting brilliance is that its principles may be adapted to cope with unanticipated situations, and Breyer makes a powerful case against treating it as a static guide intended for a world that is dead and gone. Using contemporary examples from federalism to privacy to affirmative action, this is a vital contribution to the ongoing debate over the role and power of our courts.