We are living through a peculiar moment in the long, complicated history of humans and mind-altering substances. After decades of prohibition and stigma, psychedelics have staged a remarkable comeback — not just in underground culture, but in university laboratories, clinical trials, and mainstream news. Researchers are exploring psilocybin and MDMA as treatments for depression and PTSD, and a growing number of philosophers are asking whether the altered states these substances produce might tell us something important about the nature of consciousness, reality, and the self. It turns out that drugs have always been philosophically interesting — but we haven’t always been willing to admit it.

What does it mean to be “sober,” and why has Western philosophy treated sobriety as a prerequisite for truth? If a drug dissolves your sense of self, is there still a philosopher in there doing philosophy — or has philosophy left the building? Is the category of “drug” even coherent, or is it an artifact of colonial trade routes, the war on drugs, and cultural anxieties that have very little to do with what’s actually happening in your brain?

In this episode, we sit down with Justin Smith-Ruiu, Professor of History and Philosophy of Science at the Université Paris Cité, whose new book On Drugs: Psychedelics, Philosophy, and the Nature of Reality takes exactly these questions seriously. Drawing on the history of philosophy, his own experiences, and a genuinely eclectic range of intellectual sources, Smith-Ruiu makes the case that the mainstream philosophical tradition has been too quick to sweep altered states of consciousness under the rug — and that taking them seriously might force us to rethink some of our most basic assumptions about mind, knowledge, and reality.

Grab a drink and join us as we tune in, turn on, and ask what it means to do philosophy with your whole person.

Full episode notes available at this link:
https://hotelbarpodcast.com/podcast/drugs

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Philosophy on Drugs (with Justin Smith-Ruiu)