What does it mean to have a constitution? Scholars and students associated with Walter Murphy at Princeton University have long asked this question in their exploration of constitutional politics and judicial behavior. These scholars, concerned with the making, maintenance, and deliberate change of the Constitution, have made unique and significant contributions to our understanding of American constitutional law by going against the norm of court-centered and litigation-minded research. Beginning in the late 1970s, this new wave of academics explored questions ranging from the nature of creating the U.S. Constitution to the philosophy behind amending it. In this collection, Sotirios A. Barber and Robert P. George bring together fourteen essays by members of this Princeton group. These works consider the meaning of having a constitution, the implications of particular choices in the design of constitutions, and the meaning of judicial supremacy in the interpretation of the Constitution.