Footnotes2Plato

“The safest general characterization of the European philosophical tradition is that it consists of a series of footnotes to Plato.”
–Alfred North Whitehead

Category: Kant

  • Contemporary Natural Philosophy Needs a New Theory of Forms

    In this disputation with Jacob Given and Adam Robert, I was defending the thesis that contemporary natural philosophy needs a new process-relational theory of forms, and that Whitehead’s notion of eternal objects can play that role. Adam and Jacob structured the session as a kind of updated medieval disputatio: I offered a thesis and initial…

  • Metaphysics and Theology (a dialogue with Jacob Sherman)

    This dialogue with my colleague Jake Sherman was recorded last week at our graduate program’s annual retreat.  Below is a transcript:  Matt: Welcome, everyone. Thanks for joining us this afternoon for a dialogue on metaphysics and theology, which I hope will be both interesting and entertaining. You should have found the score cards on your seat to decide…

  • Between the Speculative and the Prosaic: Life, Imagination, and Individuation

    Timothy Jackson and I went deep into descendental philosophy and aesthetic ontology, core concepts developed in my last book Crossing the Threshold (2023). I try to argue against both scientistic neutrality and dogmatic theology. I believe that any attempt at thinking the most general conditions of reality inevitably touches the spiritual. If it did not then natural science…

  • Value at the Root: Cultivating Virtue in a Post-Truth World

    Context  The following reflections grow out of my live dialogue with Bonnitta Roy about the metaphysics of value. She’ll be sharing the discussion in her pop-up school for those who subscribe. Here I wanted to offer some further reflections on what was stirred up in me. A few orienting points: First, we wanted our philosophical conversation to…

  • Creativity and the Cross: Martinus, Bergson, and Whitehead in Dialogue

    A conversation with Pedro Brea and Karsten Jensen. LLM generated transcript below. Matt Segall: Hey, Karsten. Pedro Brea: Hey! Karsten Jensen: Hi, Matt! Hi, Pedro! I’m so happy you both agreed to have this conversation with me, and I really look forward to it. Matt Segall: Likewise. My exposure to Martinus was through you, Karsten, and I really appreciated…

  • Romanticizing Evolution: Whitehead’s Organic Realism and the Return of Organic Science

    A transcript of my talk at the Cognizing Life conference in Tübingen, Germany July 18, 2025. Other contributors at the Cognizing Life conference include: Benjamin Bembé (Witten), Bohang Chen (Zhejiang), Luke Fischer (Sydney), Andrea Gambarotto (Wien), Levi Haeck(Ghent), Craig Holdrege (Ghent, NY), Christoph Hueck (Tübingen), Philippe Huneman(Paris), Jan Kerkmann (Freiburg), Dalia Nassar (Sydney), Daniel Nicholson (Fairfax), Gregory Rupik (Toronto), Ulrich Schlösser (Tübingen), Matthew Segall (San Francisco), Joan Steigerwald (Toronto), Georg Toepfer (Berlin), Gertrudis Van de Vijver (Ghent), Denis Walsh (Toronto). See also my responses to a (rather reductive!) geneticist. I draw on some…

  • My Biophilosophy Conference Talk: Romanticizing Evolution with Schelling, Peirce, and Whitehead

    Below is my talk at the “Revitalizing Biophilosophy” conference I co-hosted earlier this week. It is based on a long paper I am working on both for this conference and for “Cognizing Life,” another conference that I’ll present at next week in Tübingen, Germany (there is a free livestream option if you’d like to tune…

  • In Defense of Participatory Platonism: Dialoging with Tim Jackson about Dan McQuillan’s Critique of Data Science as Machinic Neoplatonism

    Tim and I read McQuillan, Dan. Data Science as Machinic Neoplatonism. Philos. Technol. 31, 253–272 (2018). https://doi.org/10.1007/s13347-017-0273-3 Key themes discussed: Transcript: Matt Segall: Hey Tim. Timothy Jackson: Hey, man, how you doing. Matt Segall: Cool sweater—are those sea slugs? Timothy Jackson: Yeah. Nudibranchs. Matt Segall: Nice. Timothy Jackson: Naked gills. Matt Segall: So you are underslept and overread? Timothy Jackson: Oh, yeah, big time. I…

  • Alchemy, Technology, and Individuation in Novalis, Simondon, and Jung (dialogue with Tim Jackson)

    Timothy Jackson: I really do think Simondon is becoming a very timely figure, and I think it’s probably underappreciated that his stated goal is to refound—have a novel axiomatic for the humanities, basically, or the human sciences. Like, to really break—I mean, like Whitehead, obviously—but to really break down that boundary between the two cultures. Matt…

  • Rhythms of the One: Bergson on Plotinus (Dialogue with Pedro Brea and Jack Bagby)

    Our conversation felt like an improvised rhythm of tangents. But as I joked to Pedro, a perfect circle is made of infinitely many tangents. What might appear like digression is often an expression of the deeper topology of thought, where every seeming sidetrack curves back toward the center.  Plotinus’ νοῦς (nous) floats above space and…

  • The Invariance of Variation: Or Why Metaphysics Must Become Ungrounded (Dialogue with Tim Jackson)

    Above, Tim Jackson and I dialogue about a number of conversations we watched, including: Matt Segall: So this is going to be laid back. We didn’t read anything, but we did listen to a whole bunch of conversations. I guess three. Okay, I threw another one in there. So, there’s the Levin and Deacon dialogue…

  • Prehensions, Propositions, and the Cosmological Commons (dialogue with Tevin Naidu)

    Tevin Naidu recently hosted me on his Mind-Body Solutions podcast. Above is the video and below is an edited and somewhat condensed transcript. Tevin: I have shaped today’s episode around your paper, “Physics Within the Bounds of Feeling Alone.” It is a wonderful piece—a beautiful read. One thing I often ask my guests to do is give a…

  • Is a Metaphysical Revolution Afoot in the Natural Sciences?

    In this conversation, Mahon McCann invited me to reflect on what he referred to as a metaphysical revolution in natural science—gesturing toward the shift I and others have been tracking across disciplines including physics, biology, and cognitive science, where the old mechanistic, substance-based ontology seems increasingly inadequate to account for what’s actually being discovered and needing…

  • Realizing the Noosphere

    Below are some reflections following my dialogue with Layman Pascal and  Brendan Graham Dempsey as part of Limicon 2025. The video of our dialogue should be online soon, and I’ll be sure to share it here.  It seems to me that this conversation (see prior episodes) is necessarily transdisciplinary, drawing on natural sciences, aesthetics and art, myth and religion,…

  • Science and Religion in a Participatory Cosmos

    Last night I was invited by the Center for Christogenesis at Villanova University to share some thoughts on how the science/religion dialogue may be transformed by a participatory approach to cosmology. The video will be made available in a few weeks to those who register with the Center. I began by playfully suggesting I’d be proceeding as…

  • Whitehead’s Theory of Propositions

    The title of the article Ben Snyder and I are discussing is “The Objectivity of Whitehead’s Propositions: An Explication of the Truth-Relation” in Process Studies53 (2):256-274 (2024). Ben begins with a summary of his paper’s main argument, which I’ll try to capture below. Propositions, for Whitehead, are more than statements in language: they are metaphysical “lures”…

  • Schelling’s Reading of Plato’s “Timaeus”

    In this dialogue, Tim Jackson and I return almost to the beginning of philosophy–“almost” in the sense that Plato himself was already responding to a few centuries of philosophizing by the physiologoi. His dialogue Timaeus represents a synthesis rather than a pure start in the evolution of philosophy. He attempted to reconcile different positions and…

  • Whitehead’s Revolutionary Concept of Prehension (Thinking with Tim Jackson and Charles Hartshorne)

    Tim Jackson and I discussed Hartshorne’s article, “Whitehead’s Revolutionary Concept of Prehension.” Charles Hartshorne offers a detailed and insightful examination of Alfred North Whitehead’s process-relational philosophy. Hartshorne, who served as Whitehead’s assistant at Harvard University during the 1920s, was also profoundly influenced by Charles Sanders Peirce, whose papers he edited during that same period. This background…

  • Process Metaphysics Meets Possibilist Physics (Dialoguing with Ruth Kastner)

    Ruth Kastner and I first met several years ago in the context of a seminar series focused on plasma physicist and philosopher Timothy Eastman’s work. Ruth also participated in the “Metaphysics and the Matter With Things: Thinking With Iain McGilchrist” conference I co-hosted at CIIS last March. We’ve been meaning to sit down to see what bridges might…

  • Process, Reality, and Context: Timothy E. Eastman Unties the Gordian Knot – Summaries of the Seminar Series

    Below is a detailed summary of each of the nine seminar sessions that ran monthly from June 2021 through February 2022 focused on Dr. Timothy Eastman’s book, Untying the Gordian Knot: Process, Reality, and Context (2020). This event was sponsored by the Cobb Institute’s Science Advisory Committee, which I chair. You can read my review of…

  • Review of Vol. 2 of ‘The Harvard Lectures of Alfred North Whitehead’

    Below is a draft of my review of: BRIAN G. HENNING, JOSEPH PETEK, and GEORGE LUCAS, eds. The Harvard Lectures of Alfred North Whitehead (1925-1927): General Metaphysical Problems of Science. Edinburgh: Edinburgh University Press, 2021: lxii + 511 pages. The version that is eventually published in Process Studies will likely need to be about half this length, so I’m…