Closer To Truth

What can Galileo still teach us about science, truth, and discovery? In this conversation, Mario Livio discusses Galileo’s scientific legacy, the Hubble Space Telescope, science denial, exoplanets, cosmology, and the future of life in the universe. Drawing from his book Galileo: And the Science Deniers , Livio explores Galileo’s role in the development of the scientific method and examines how sci...

Do we really have free will? In this conversation, Gregg Caruso explores the philosophy of free will, moral responsibility, determinism, compatibilism, libertarian free will, and free will skepticism. Discussing themes from Just Deserts: Debating Free Will , co-authored with Daniel Dennett, Caruso examines whether human beings possess the kind of control required for moral responsibility and how n...

How do we measure the expansion of the universe? In this conversation, Wendy Freedman discusses the Hubble constant, standard candles, redshift, and the ongoing effort to determine the age, size, and evolution of the universe. Exploring Cepheid variables, supernovae, cosmic expansion, and the tension between competing cosmological measurements, Freedman explains how increasingly precise observatio...

  What does evolution imply about human nature and human value? In this conversation, Michael Ruse explores the philosophy of biology, the mechanistic view of life, human exceptionalism, and the relationship between evolution and meaning. Discussing themes from his book A Philosopher Looks at Human Beings , Ruse examines whether the world is best understood as an organism or a machine, how Darwin...

How did the universe begin—and what determines the laws of physics we observe? In this conversation, Thomas Hertog discusses On the Origin of Time: Stephen Hawking’s Final Theory, presenting a new approach to cosmology developed through years of collaboration with Stephen Hawking. Exploring quantum cosmology, the multiverse, fine-tuning, and the “no-boundary” proposal, Hertog argues for a profound...

Can virtual worlds be genuinely real? In this conversation, David Chalmers explores the philosophical implications of virtual reality, simulation theory, and digital existence. Discussing themes from his book Reality+, Chalmers examines whether we could be living in a simulation, whether virtual worlds can contain real meaning and value, and how emerging digital realities challenge our understandi...

In this conversation, Anil Seth discusses a new scientific approach to consciousness — moving beyond the traditional “hard problem” toward explaining the actual properties of conscious experience. Robert Lawrence Kuhn and Seth explore phenomenology, neural correlates of consciousness, predictive perception, conscious selfhood, and why measuring consciousness may be essential for understanding it....

Why do we need philosophy to understand evolution? Robert Lawrence Kuhn explores the philosophy of evolutionary biology — not just how evolution works, but what its core concepts really mean. Through conversations with Elliott Sober, Richard Dawkins, Samir Okasha, John Dupré, Dennis Noble, and Michael Ruse, this episode examines natural selection, common ancestry, challenges to evolutionary theory...

What if the boundaries between you and every other conscious being are an illusion? Philosopher Arnold Zuboff makes the case for Universalism — the radical view that first-person immediacy, not any particular body or origin, is what makes an experience yours. And if that's right, then you exist wherever consciousness exists. Arnold Zuboff is an American philosopher known for his work on personal i...

Philosopher Rebecca Newberger Goldstein introduces the idea of the “mattering instinct”—the deep human drive to see our lives as significant. In this conversation, she explores how our longing to matter may arise from the very material reality we often try to transcend. Rebecca Newberger Goldstein is an award-winning philosopher, writer, and public intellectual. She is the author of 10 books of ac...

What might intelligence become—not just in centuries, but across millions or even billions of years? Robert explores the deepest questions about the far future of intelligence in the universe. While we often think in terms of decades, extending our perspective to vast cosmic timescales challenges our assumptions about meaning, purpose, and what may ultimately be real. If the future holds clues, ho...

We may be creating something a million times smarter than all of humanity combined — and we have no plan for what happens next. AI safety pioneer Roman Yampolskiy lays out the risks, the arguments, and whether any solution exists. Roman V. Yampolskiy is a tenured Associate Professor of Computer Science at the University of Louisville's Speed School of Engineering, where he founded and directs the...

Is the world we experience truly real, or is it more like a dream we haven't yet woken up from? Michael James, a leading scholar and translator of the teachings of Sri Ramana Maharshi, explores how Ramana's philosophy challenges our most basic assumptions about the self, the world, and the nature of reality. Michael James has spent nearly 50 years studying, practicing, and translating the works of...

Make a donation to Closer To Truth to help us continue exploring the world's deepest questions without the need for paywalls. I like arguments about God, whether based on science, philosophy or personal experience. I like to push and to be pushed, explore the possible existence of a Creator. I must also consider defeaters of God. Featuring interviews with Rebecca Goldstein, Ian Barbour, John Polki...

Support the show with a tax-deductible donation of any amount so we can continue exploring the world's biggest questions without the need for paywalls.   Can physical facts about the brain account for mental experiences of the mind? Has philosophy of mind made progress? We take a 15-year journey with John Searle and David Chalmers.    

Contribute what you can to help Closer To Truth continue exploring the world's deepest questions without the need for paywalls.   We like pushing boundaries, trying to discern existence, searching the foundations of reality, knowing all that can be known. Overly ambitious? Sophomoric? We don't care. We do it anyway. Here are ultimate questions.   Featuring interviews with Lawrence Krauss, John Les...

Contribute what you can to help Closer To Truth continue exploring the world's deepest questions without the need for paywalls. Explore diverse theories of consciousness, like materialism, dualism, panpsychism, idealism, and diverse ways of thinking about consciousness, like neuroscience, philosophy, wisdom traditions. Compare theories of consciousness on a ‘Landscape of Consciousness'.

Make a donation to Closer To Truth to help us continue exploring the world's deepest questions without the need for paywall   What kinds of afterlives do the world’s religions offer? Soul/spirit in heaven or hell, with or apart from God? Reincarnation with innumerable rebirths, seeking liberation and nirvana? Resurrection of the body, reuniting with a soul/spirit?

Life after death is a haunting and deeply personal longing. Can we explore life after death in relation to theories of consciousness, ranging from strict materialism to imaginative philosophy to ancient wisdom traditions?

Explicitness is one of the fundamental mysteries in which our lives are wrapped. Our capacity, as conscious subjects, to make things explicit, so that what-is presents itself as “that-it-is” or “that-it-is-the-case” is at the heart of the mystery of human being. Philosopher Raymond Tallis explores how explicitness connects with fundamental ontological, metaphysical, and epistemological questions....

What causes consciousness, our inner felt experience, like the smell of garlic cooking in olive oil? Explore diverse theories from quantum consciousness to consciousness as fundamental reality. We seek the edges of consciousness.

Almost all religions use art in their sacred spaces and many use art forms in their worship rituals. Certainly, there is powerful social cohesion at work. Can cross-religion communications in art, largely nonverbal, work to enhance similarities and mitigate differences among religions that, at least superficially, have significant differences? Can art be a much-needed unifier? Featuring interviews...

Oxford physicist Vlatko Vedral seeks to shatter complacency in modern physics and show why five revolutionary experiments in quantum physics promise to open the gates separating us from a true understanding of the universe. They may sound very strange—one essentially involves entangling a human with Schrödinger’s cat—but they lay bare elements of our theories that are particularly problematic, suc...

Many belief systems, religions in particular, use art for promoting their messages and furthering their missions. What makes art so effective in building and solidifying religious traditions? Can art attract and motivate converts? Is affecting or changing belief systems a proper use of art?   Featuring interviews with Justin Barrett, Marlene Altenmüller, Mario Gollwitzer, Jamal Elias, Robin Jensen...

Throughout his career, Penrose has challenged conventional wisdom in physics, mathematics, and the philosophy of science. He has tackled some of the most profound questions of the universe: How do quantum mechanics and cosmology shape our understanding of reality? Can human consciousness be fully explained by physical laws, or does it transcend computation? This wide-ranging conversation spans Pen...