Buy tickets for the live Conversations with Tyler recording with Craig Newmark at 92NY! Few living scholars can claim to have shaped how we read Machiavelli as decisively as Harvey Mansfield. His new book, The Rise and Fall of Rational Control, argues that Machiavelli didn't just write about politics—he invented the intellectual machinery of the modern world, starting with the concept of "effectual truth," which Mansfield credits as the seed of modern empiricism. At 93, after 61 years of teaching at Harvard, Mansfield remains cheerfully unimpressed by most of contemporary philosophy, convinced that the great books are self-sustaining, and that irony is what separates serious philosophy from the rest. Tyler and Harvey discuss how Machiavelli's concept of fact was brand new, why his longest chapter is a how-to guide for conspiracy, whether America's 20th-century wars refute the conspiratorial worldview, Trump as a Shakespearean vulgarian who is in some ways more democratic than the rest of us, why Bronze Age Pervert should not be taken as a model for Straussianism, the time he tried to introduce Nietzsche to Quine, why Rawls needed more Locke, what it was like to hear Churchill speak at Margate in 1953, whether great books are still being written, how his students have and haven't changed over 61 years of teaching, the eclipse rather than decline of manliness, and what Aristotle got right about old age and much more. Read a full transcript enhanced with helpful links, or watch the full video on the new dedicated Conversations with Tyler channel. Recorded January 22nd, 2026. This episode was made possible through the support of the John Templeton Foundation. Other ways to connect Follow us on X and Instagram Follow Tyler on X Sign up for our newsletter Join our Discord Email us: cowenconvos@mercatus.gmu.edu Learn more about Conversations with Tyler and other Mercatus Center podcasts here. Timestamps: 00:00:00 - Bumper 00:00:36 - Intro 00:01:20 - Machiavelli's "Effectual Truth" 00:05:56 - Conspiracy Theories 00:12:39 - The Vulgarity of Democracy 00:16:35 - The Future of Straussianism 00:34:30 - Why the Supply of Great Books has Dried Up 00:37:56 - Rational Control vs. Spontaneous Order 00:40:25 - Winston Churchill 00:43:30 - Students at Harvard 00:46:05 - Manliness 00:47:34 - Death and Politics 00:48:56 - Outro Image Credit: Erin Clark via Getty Images