Protectionism might seem like a shield, but it easily becomes a cage.

—Johan Norberg in the Wall Street Journal

Johan Norberg, senior fellow at the Center for Global Liberty and Prosperity, is one of the world’s most compelling advocates for classical liberal ideas. The author or editor of more than 20 books translated into more than 30 languages, Norberg has established himself as a global superstar for liberty. His latest work, Peak Human: What We Can Learn from the Rise and Fall of Golden Ages, is his most ambitious yet: a sweeping, urgent, and brilliantly argued history of human flourishing.


Norberg analyzes seven golden ages, from ancient Athens to Song China and Abbasid Baghdad. He reveals the common thread: Societies consistently flourish when they embrace openness to trade, ideas, and people, but they decline when they withdraw from the world. As America approaches its 250th anniversary, Norberg’s book asks a critical question: How do we ensure that our current golden age doesn’t end?

The book earned widespread critical acclaim upon its UK release in May 2025. The Economist published a glowing review—calling it a work that “deftly punctures popular misconceptions” and asking “Could a history book be more timely?”—and named it one of the best books published in 2025. The Financial Times praised it as “an entertaining and informative read” and “a compelling and timely study of what drove history’s most influential civilisations.” The New Statesman called it “engaging and persuasive,” while former UK Chancellor of the Exchequer Jeremy Hunt declared it simply “the best book I have read this year.”

When Peak Human crossed the Atlantic for its September US release, Norberg brought its message directly to American readers with a Wall Street Journal op-ed titled “Great Civilizations Depend on Trade”—a timely reminder, delivered at exactly the right moment.

Peak Human: What We Can Learn from the Rise and Fall of Golden Ages book cover. Shows a row of arrowhead, spear tips, and a mouse cursor.
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Peak Human: What We Can Learn from the Rise and Fall of Golden Ages

Ancient Greece gave us democracy and the rule of law; out of Abbasid Baghdad came algebra and modern medicine; and the Dutch Republic furnished us with Europe’s greatest artistic movements. All previous golden ages have proven finite, whether through external pressures or internal fracturing. Cato senior fellow Johan Norberg, who has won awards for The Capitalist Manifesto, Open: The Story of Human Progress, and other works, examines seven of humanity’s greatest civilizations. He compares them with today’s civilizations and asks, “How do we ensure that our current golden age doesn’t end?