In a recent article for The Stream, Acton’s Director of Research, Samuel Gregg asks the question, “Is Catholicism Compatible with the American Experiment?” Gregg cites an article by political philosopher Patrick Deneen who suggested that “the main argument among American Catholics will concern the relationship of modern liberal democracies–and, at a deeper level, the American Founding–with Catholicism.” Gregg doesn’t necessarily disagree with this assertion, but argues that it “reaches further back to the early modern period often called the Enlightenment.”

The Enlightenment was hugely influential on the American founding:

Alexander Hamilton and Thomas Jefferson, for instance, sharply disagreed on many subjects, but all their serious biographersconcurthat both were profoundly shaped by Enlightenment writers.

The intellectual developments associated with the Enlightenment shared an emphasis on (1) asking every belief and institution to justify itself rationally, and (2) applying the tools associated with the scientific method to as many spheres of life as possible. This focus on natural philosophy and the natural sciences was especially influenced by Sir Isaac Newton’s Principia(1687) and Newton’s successful integration of the mechanics of physical observation with the mathematics of axiomatic proof, and his development of a system of scientifically verifiable predictions.

Another Enlightenment hallmark was an emphasis on utility, including the usefulness of particular habits and institutions. A related hallmark was an emphasis on “progress” in the sense of deepening man’s understanding of the natural world and continually enhancing the usefulnessof particular objects and ideas. Given the subsequent success in expanding humanity’s knowledge and control of the natural world, similar approaches were eagerly applied to politics and economics.

There’s much about the Enlightenment to criticize. The tendency to absolutize empirical reason, for instance, has surely narrowed Western conceptions of human reason. Likewise David Hume’s skepticism and emotivist explanation of human action effectively denies free will. Politically speaking, there’s a straight line running fromJean-Jacques Rousseau’s concept of the General Will — which arguably deifies mass opinion and the spirit of the age — to the French Revolution’s reign of terror.

The Enlightenment is also plex:

In the first place, to speak of “the Enlightenment” as a monolith is misleading. Chronologically speaking, there were early and late Enlightenments. National expressions also significantly differed from each other. The late-French Enlightenment associated with figures like Rousseau, for example, departed in important ways from its Scottish counterpart.

Even within particular Enlightenment settings, there was plenty of diversity. Hume was an outlier in his pared to other Scots such as the immensely influential Francis Hutcheson, who was (like many Scottish Enlightenment thinkers) a believing Christian clergyman. Another Scottish luminary and clergyman-professor, Thomas Reid, spent much of his life vindicating self-evident moral principles and demolishing Hume’s claim that morality resulted from the codification of socially useful habits.

It’s also hard to deny the benefitsfrom the various Enlightenments. Take, for instance, religious toleration. With rare exceptions, religious minorities in the pre-Enlightenment European world were subject to debilitating legal restrictions. Jews invariably suffered the most as a result of such oppression.

Many eighteenth-century Enlightenment thinkers were deeply critical of these arrangements. Hence, as James Hitchcock notes in prehensive History of the Catholic Church (2012), “Enlightenment reform programs usually included some degree of religious freedom.” Though he disdained Catholicism, for example, the Moderator of the Church of Scotland and leading Scottish Enlightenment thinker William Robertson defended government efforts to diminish Britain’s anti-Catholic penal laws, a stance that earned him death threats.

The movement is also important, not only because it brought about the predominance of religious freedom, but also because of the changes in economic thinking that occurred during the Enlightenment:

Adam Smith

Before the impact of the Enlightenment, from the early sixteenth century until the late eighteenth century, the West was economically dominated by what Adam Smith called “the mercantile system.” Mercantilism viewed economic life as a zero-sum game. It consequently viewed imports negatively, discouraged free trade between nations, and encouraged collusion between governments, powerful merchants and monopolistic guilds. Mercantilist economic assumptions encouraged war as countries jostled to control trade routes and colonies. The losers from mercantilism included consumers, entrepreneurs and innovators stifled by the guilds’ hostility petition and technological change, and anyone without connections to government officials — that is, most people.

All this was directly challenged by Smith’s Wealth of Nations. Mercantilism, he stressed, tendedto legally privilege some elites while denying economic liberty to others. In short, mercantilism wasn’t just inimical to peace between nations and the economic growth that’s indispensable for wide-scale poverty reduction. It was also unjust. That some of these criticismsworked their way into texts as important for America’s self-understanding as George Washington’s 1796 Farewell Address underscores their importance tothe American experiment.

There were otherpositive Enlightenment contributions to the American Founding, such asMontesquieu’s reflections on constitutional order in his De l’Esprit des Lois (1748). No less than Joseph Ratzinger (later Pope Benedict XVI) once wrote that there are practical consequences resulting from the various Enlightenments that Christians today wouldn’t want to do without.

Gregg concludes by asking if all this means that Catholicism and this humanist movement are ultimately patible:

Are there tensions between Catholicism and particular Enlightenment ideas? Of course. Is patibility withthe ideas that shaped theAmerican Founding a legitimate subject for debate? Absolutely. But as American Catholics engage this discussion — one whose significance embraces Evangelical and Eastern Orthodox Christians as well as orthodox Jews — they would do well to avoid sweeping generalizations and acknowledge and explore the nuances of the Enlightenment more carefully.

Reason itself, given to us by God, surely requires nothing less.

Read Samuel Gregg’s full article at the Steam.org.