Converging Dialogues

Latest Episodes:

#501 - The Origin of Sex: A Dialogue with Lixing Sun Jul 28, 2026

Show notes

In this episode, Xavier Bonilla has a dialogue with Lixing Sun about the origins of sex in many species. They discuss the origins of sex, asexual reproduction, sexual reproduction, and “flip-flopping.” They discuss large and small gametes, varieties of biological sex, Dawkins and the selfish gene, sex chromosomes, changing sex, intersex, mate choice and mate competition, sexual identity, and many more topics.

Lixing Sunis a distinguished research professor at Central Washington University and a 2024–2025 Radcliffe fellow at Harvard University. He is author of The Liars of Natureand the Nature of Liars, The Fairness Instinct, and On the Origin of Sex.

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#500 - Gerontocracy In America: A Dialogue with Samuel Moyn Jul 12, 2026

Show notes

In this episode, Xavier Bonilla has a dialogue with Samuel Moyn about gerontocracy in America. They discuss how we live in a gerontocracy, coalitions, older institutions, avoiding ageism, oligarchies, elites and democracy, long term view, abundance, and many more topics.

Samuel Moyn is Chancellor Kent Professor of Law and History at Yale University. He has his law degree from Harvard University and his PhD in modern European history from University of California, Berkeley. He is fellow at Quincy Institute for Responsible Statecraft and has received fellowships from the American Council of Learned Societies, the Berggruen Institute, and the John Simon Guggenheim Memorial Foundation. His main interests are in international law, human rights, and 20th century European moral and political theory. He was recently named one of Propsect Magazine’s top thinkers in the world for 2024. He is the author of numerous books including, Liberalism Against Itself: Cold War Intellectuals and the Making of our Times, and the most recent book, Gerontocracy in America: How the old are hoarding power and wealth and what to do about it.

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#499 - Why Nothing Works: A Dialogue with Marc Dunkelman Jul 05, 2026

Show notes

In this episode, Xavier Bonilla has a dialogue with Marc Dunkelman about progressives and policy ideas for growth. They discuss shared interests of collective and individual interests, progressives on big ideas, Hamiltonian and Jeffersonian progressive styles, pragmatic institutionalism, new ideas in the 21st century, elites, visionary leadership, and many more topics.

Marc J. Dunkelman is a resident scholar at the Searchlight Institute and a fellow at Brown University’s Watson School for International and Public Affairs. During more than a decade working in politics, he worked for Democratic members of both the Senate and the House of Representatives. The author of The Vanishing Neighbor, Dunkelman’s work has appeared in The New York Times, The Atlantic, The Wall Street Journal, The Washington Post, The Financial Times, The Boston Globe, and Politico. He is the author of the latest book, Why Nothing Works: Who killed progress and how to bring it back.

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#498 - The Invention of Yesterday: A Dialogue with Tamim Ansary Jun 28, 2026

Show notes

In this episode, Xavier Bonilla has a dialogue with Tamim Ansary about a global history of humans through time. They discuss the main theme of interconnectedness, language, symbols, and culture, origins and nomadic peoples, early trading, rise of city states, religion and belief systems, the Crusades, Mongol Empire, Ottoman Empire, colonialism, empires and nation states, and many more topics.

Tamim Ansary is the author of many books, including Destiny Disrupted and The Invention of Yesterday. He has published essays and commentary in the San Francisco Chronicle, Salon, the Los Angeles Times, and more. Born in Afghanistan in 1948, he moved to the US in 1964. He lives in San Francisco.

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#497 - The Sleepless Ape: A Dialogue with David Samson Jun 21, 2026

Show notes

In this episode, Xavier Bonilla has a dialogue with Davis Samson on the evolution of sleep. They discuss various sleep misconceptions, why we need sleep, stages of sleep, and the physiological and social aspects of sleep. They also talk about the evolution of circadian rhythms, napping, evolutionary differences, dreams, paleo sleep, and many more topics.

David R. Samson is associate professor of evolutionary anthropology at the University of Toronto and the author of Our Tribal Future: How to Channel Our Foundational Human Instincts into a Force for Good. His pioneering research has been featured in National Geographic, Time, and The New York Times and on NPR and the BBC. He is the author of the latest book, The Sleepless Ape: The story of sleep in human evolution.

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#496 - The Weimar Republic: A Dialogue with Katja Hoyer Jun 18, 2026

Show notes

In this episode, Xavier Bonilla has a dialogue with Katja Hoyer about the Weimar Republic. They give an overview of the Weimar Republic, voting and role of economics, major figures, how Hitler won his election, Nazi rule under Weimar Republic, negative views against Jews, Weimar after World War II, and many more topics.

Katja Hoyer is a historian and journalist who is visiting research fellow at King’s College London and a Fellow of the Royal Historical Society. She is also Global Opinions contributing columnist for The Washington Post. Her main research area is the history of modern Germany. She is the author of Blood and Iron: The Rise and Fall of the German Empire 1871-1918 , Beyond the Wall: A History of East Germany , and the most recent book, Weimar: Life on the edge of catastrophe.

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#495 - Rumination and Rumblings of the Mind: A Dialogue with Donna Jackson Nakazawa Jun 11, 2026

Show notes

In this episode, Xavier Bonilla has a dialogue with Donna Jackson Nakazawa about rumination. They define rumination, talk about belonging, the Default Mode Network, MIST framework, therapy, various techniques, and many more topics.

Donna Jackson Nakazawa is the author and writer of many books that explore the intersection of neuroscience, immunology, and emotion, including The Angel and the Assassin, named one of the best books of 2020 by Wired magazine, and Childhood Disrupted, which was a finalist for the Books for a Better Life Award. Her work has appeared in Wired, Stat, The Boston Globe, The Washington Post, Health Affairs, Parenting, AARP Magazine, and Glamour, and has been featured on the cover of Parade and in Time;she has appeared on Today, NPR, NBC News, and ABC News. Jackson Nakazawa is also the creator and founder of the narrative writing-to-heal program Your Healing Narrative: Write-to-Heal with Neural Re-Narrating.™ She is a regular speaker at universities, including the Harvard Division of Science Library Series, Johns Hopkins University, and the University of Arizona. Her recent book, Mind Drama: The science of rumination and how to outwit your inner defeatist.

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#494 - Contested Continent: A Dialogue with Peter C. Mancall Jun 07, 2026

Show notes

In this episode, Xavier Bonilla has a dialogue with Peter Mancall about the early years of North America. They discuss what is America, importance of Maize and landscape of pre-Columbian America, Native Peoples in the middle of the 15th century, Norse discoveries, Columbus, French in Canada, Cortes in Mexico, British involvement, religion, slavery, and the legacy of early North American history.

Peter C. Mancall is Distinguished Professor; the Andrew W. Mellon Professor of the Humanities; Professor of History, Anthropology, and Economics; and the Linda and Harlan Martens Director of the USC-Huntington Early Modern Studies Institute. He is an elected fellow of the Society of American Historians and the Royal Historical Society and an elected member of the American Antiquarian Society and the Colonial Society of Massachusetts. He was the Harmsworth Professor of American History at Oxford University in the 2019-2020 academic year. He is the author of many books, including the recent book, Contested Continent: The struggle for North America, c. 1000-1680.

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#493 - Athens & Sparta: A Dialgoue with Adrian Goldsworthy Jun 02, 2026

Show notes

In this episode, Xavier Bonilla has a dialogue with Adrian Goldsworthy about the history of Athens and Sparta. They provide an overview of Athens and Sparta, Aegean history, and city-states in Ancient Greece. They talk about why tyranny did not work in these early city-states, Persian War with Greece, Peloponnesian War, Alexander the Great, legacies of Athens and Sparta, and many more topics.

Adrian Goldsworthy is a historian and author. He has his DPhil from Oxford University and has conducted research at Cardiff University and taught at King’s College London and University of Notre Dame. He is the author of numerous books on Roman history.

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#492 - The Life of George Washington: A Dialogue with H.W. Brands May 26, 2026

Show notes

In this episode, Xavier Bonilla has a dialogue with H.W. Brands about the life of George Washington. They discuss Washington as an enigma, his social and political statue, his upbringing and temperament, and his relationship with his wife and his relationship with slavery. They also talk about Washington as a general, as president, and the legacy of Washington.

H. W. Brands holds the Jack S. Blanton Sr. Chair in History at the University of Texas at Austin. He has written more than a dozen biographies and histories, including The General vs. the President, a New York Times bestseller. Two of his biographies, The First American and Traitor to His Class, were finalists for the Pulitzer Prize. He is the author of the latest book, American Patriarch: The life of George Washington.

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