Arthur Brooks reckons he's on the fourth leg of a spiral-shaped career: French horn player, economist, president of the American Enterprise Institute, and now Harvard professor and evangelist for the science of happiness. His new book, The Meaning of Your Life: Finding Purpose in an Age of Emptiness, argues that happiness isn't a feeling but a combination of enjoyment, satisfaction, and meaning — the macronutrients of happiness, he calls them — and that most of us are gorging on the wrong ones. Tyler, naturally, wants to know: what's the marginal value of a book on happiness, and what does spiral number five look like? Along the way, Tyler and Arthur cover how scarcity makes savoring possible and why knowing you'll die young sharpens the mind, what twin studies tell us about the genetics of well-being and why that's not actually depressing, the four habits of the genuinely happy, the placebo theory of happiness books, curiosity as an evolved positive emotion, the optimal degree of self-deception, why Arthur chose Catholicism rather than Orthodoxy, what the research says about accepting death, how he became an economist via correspondence school, AI's effect on think tanks, the future of classical music, whether Trumpism or Reaganism is the equilibrium state of American conservatism, whether his views on immigration have changed, what he and Oprah actually agree on, which president from his lifetime he most admires, Barcelona versus Madrid, what 60-year-olds are especially good at, why he's reading Josef Pieper, how he'll face death, and much more.