One recurring call over a century of American constitutional thought is for return to a understanding of American federal and state Constitutions. does not necessarily mean originalist or interpretivist. Some classical views, such as the attempt to revitalize Lochner-style economic due process, find little support in the text of the federal Constitution or any of the contemporary state constitutions. Rather, constitutional meaning is thought to lie in a background link between constitution formation and classical statecraft. The core theory rests on the assumption of a to which everyone in some initial position agreed. Like any contract, it would make every participant a winner. The participants have liberty and property rights antecedent to the state, but choose to give up as little of these as needed to empower government. Because insisting on either unanimous consent or individual voter participation on every issue is impractical and unwise, republican representative government comes into existence. But then it is essential that this government act consistently with the and not be captured by factions, or special interests.The result is constitutionalism that is wary of legislation as excessively vulnerable to special interest capture, suspicious of non-unanimous direct democracy tools such as initiatives and referenda because they often disrespect individual rights, and severely critical of most forms of economic regulation. With this distrust of legislation comes a reliance on judges to get the right answer, striking down statutes as unconstitutional even when the court's mandate is not explicitly stated in any constitutional language.This article argues, first, that the Constitution was not classical in its inception. Historically it was pre-classical, particularly on matters of private and property rights and government intervention in the economy. That conclusion is consistent with its text, but even clearer from contemporary perspective, as well as early court interpretation. Second, a distinctively perspective on the Constitution came later, as the influence of Adam Smith's Wealth of Nations and his English and American followers filtered through American academies. The adoption of classical views resulted from the Jacksonian movement, which began in the 1820s. It took root in federal constitutional doctrine with Jackson's appointment of Chief Justice Roger B. Taney, an economic liberal. Classical liberal views increasingly influenced both state and federal constitutional thought well into the twentieth century, although state courts interpreting their own constitutions led the way. These included a reversal of Chief Justice Marshall's broad reading of the federal commerce power, a strong antiregulatory bias favoring private markets, suspicion of monopoly, the rise of a theory of inverse takings so as to limit the government's power to engage in economic development that harmed private property, development of a technical and narrowly focused patent system as an exception to this hostility toward monopoly, legislative capture justifications for judicial review, and a strong view of liberty of contract. As these doctrines expanded, however, constitutional doctrine began to depart more significantly from constitutional texts.While constitutional classicism was liberal in its economics, it was not libertarian. Even the strongest advocates for laissez faire in constitutional economic theory also favored strong regulation of morality on fundamentally Christian grounds. These views characterized both the great Gilded Age public law treatise writers as well as the Supreme Court. Third, one defining element of classical political theory -- the social -- never captured an important following in American mainstream constitutional thought, not even during the founding and early national periods or the later heyday of constitutional classicism. While judges and constitutional writers sometimes spoke of a contract or compact, they almost always meant the text of a constitution or some other authoritative document. They rarely advocated for a doctrine that would enable them to jump off the ratified text to some unnamed fundamental principle. Even the academic and judicial architects of economic substantive due process during the Gilded Age and Progressive Era did not typically rely on the idea, and some of them forcefully rejected it. Fourth, and concluding, the idea that classical constitutional doctrine was displaced by progressive constitutionalism is also wrong, or at least wildly exaggerated. The constitutional revolution that occurred during the first four decades of the twentieth century was certainly supported by self-identified progressives. But support for change was broader and much more centrist, driven by changes in economic theory that today are accepted by liberals and conservatives alike. This makes it impossible to go back.