We often think of belief as a religious or cultural idea that is a hallmark of modern humans. But what if the early sparks of belief burned in our ancestors’ minds long before modern humans walked the earth? What if beliefs about some of the biggest questions out there, like what happens after death, weren’t just pondered by Homo sapiens? On this episode, evolutionary anthropologist Agustín Fuentes takes us on a journey spanning millions of years, from our primate relatives in the deep past to the complex spiritual and cultural traditions we know today. Along the way, we’ll learn how the capacity for belief has helped shape our species and why it remains a powerful force in our lives today. Agustín Fuentes is a Professor of Anthropology at Princeton University and the author of the books Why We Believe: Evolution and the Human Way of Being and The Creative Spark: How Imagination Made Humans Exceptional. Learn more about his work on his website, and be sure to check out his forthcoming book Sex is a Spectrum: The Biological Limits of the Binary, due out in May 2025.