Nothing can be trusted to be real, or at least, that’s the starting point. In this episode, I break down René Descartes’ method of radical doubt by walking through the First and Second Meditations, step by step. What happens if you treat everything that can be doubted as false? That includes; your senses, your body, the external world, and even mathematics.

Source of Discussion: Meditations on First Philosophy, René Descartes, 1641.

Dr. Avi Loeb is a prominent theoretical physicist specializing in astrophysics and cosmology. He serves as the Frank B. Baird Jr. Professor of Science at Harvard University, where he previously chaired the Astronomy Department and founded the Black Hole Initiative. He has authored over 800 papers and popular books like Extraterrestrial on potential signs of alien technology. Follow the podcast for more conversations on cosmology, science, and philosophy.

As we enter 2026, I wanted to take a step back and reflect on some of the books I read this year, and what they made me rethink about life, meaning, power, consciousness, and society. Check out the chapter names to see books discussed in this video. Let me know in the comments what you’re planning to read in 2026, and whether you have read any of these before.

Was education ever meant to make you employable or fix your career? In the final book of Politics, Aristotle argues that this assumption misunderstands education from the beginning. According to Aristotle, education primarily exists for the sake of leisure, here understood as freedom from necessity and the condition for contemplation. This understanding proposes that a life organized entirely around usefulness and efficiency may function, but it cannot flourish. In this episode, I unpack Aristotle’s most demanding claims about education, virtue, habituation, music, physical training, and the role of the city in shaping character. Aristotle draws sharp distinctions between usefulness and nobility, cleverness and virtue, play and leisure, work and the activities that are worth pursuing for their own sake. There might be some FPS drops in the beginning of the video, which gets better later. This was due to unidentified technical issue during the recording. I apologize for this. However, the audio and the pacing is consistent throughout the episode, so it should not diminish the quality of experience.

Did Aristotle sketch the foundations of something like Universal Basic Income in ancient times? In Book VII of Politics, he argues that no citizen should live in a state of constant labor and necessity, because leisure is the precondition for virtue, philosophy, and judgment. In this episode, I walk through his surprising claims about basic sustenance, land distribution, civic roles, military power, and why a well-designed city must give its citizens the freedom to think, reflect, and flourish. Aristotle connects everything: virtue, happiness, citizenship, leisure, even city walls and cold plunges into one vision of how a society creates excellent human beings. Source for this discussion: Aristotle, Politics, Book VII (Chapters 9–14).

Aristotle never treated philosophy as a luxury or something that you do when you are bored. In Book Seven of Politics, he forces a difficult question: can the philosophical life become a retreat from real action? And if so, what does that say about the lives we choose? What is worth pursuing at the end of the day? And what is ultimately meaning of life? In this episode, I break down Aristotle’s argument that happiness is found in living life according to virtue, and both philosophical / scientific life and active civic life are virtuous. Virtue comes from action and from the choices you make, the habits you build, and the character you sharpen. Thought without action becomes passivity. Action without thought becomes chaos. The good life lies in the tension between them. Aristotle also explores the oldest divide in human life: the active citizen versus the pure thinker.

In this episode, I walk through Book 6 of Aristotle’s Politics, a section where he becomes unusually practical. Here he stops talking about ideal systems and starts asking a simpler question: what actually keeps a community functioning? Why do some forms of shared rule remain stable while others constantly shift? Aristotle looks at freedom, equality, participation, and the habits of everyday life. He studies how farmers, merchants, and workers naturally shape different patterns of governance often without intending to. He examines why different groups see justice differently, how equality gets defined, and why the character of a population matters as much as its laws.

Source of discussion in the video: Aristotle’s Politics, Book VI, Chapters 1–8.

I talked to Dr. Anil Seth, neuroscientist, author of "Being You", and one of the world’s leading thinkers on consciousness, to explore one of the deepest questions in philosophy and science: What does it mean to be aware, and why does it feel like something to be you? Dr. Seth’s work is amazing as it bridges neuroscience, philosophy, and artificial intelligence. Just to be clear, the theory of controlled hallucination that Anil advocates doesn't suggest the external world doesn't exist. It simply means our access to it is always filtered through the interpretive and predictive mechanisms of our own brains. Portrait credit: Ramon Haindl / Die Ziet