Sadler's Lectures

Thomas Hobbes, De Corpore - "Of Identity And Difference" - Sadler's Lectures

10 min · 12. Juni 2026
Episode Thomas Hobbes, De Corpore - "Of Identity And Difference" - Sadler's Lectures Cover

Beschreibung

This lecture discusses key ideas from the modern philosopher Thomas Hobbes' work De Corpore, specifically ch 11. "Of Identity and Difference", part 7 In this section, Hobbes explores questions and problems of what makes a thing remain the same thing throughout its changes over time or in composition. He considers several different philosophical approaches to the issue, one which focuses on the matter, another which focuses on the form, and a third which focuses on the accidents of the presumed substance in question. He references Plutarch's famous Ship of Theseus problem in the course of his discussion. To support my ongoing work, go to my Patreon site - www.patreon.com/sadler If you'd like to make a direct contribution, you can do so here - www.paypal.me/ReasonIO - or at BuyMeACoffee - www.buymeacoffee.com/A4quYdWoM You can find over 3500 philosophy videos in my main YouTube channel - www.youtube.com/user/gbisadler Purchase Thomas Hobbes' De Corpore - https://amzn.to/4e4LUZj

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Episode Thomas Hobbes, De Corpore - "Of Identity And Difference" - Sadler's Lectures Cover

Thomas Hobbes, De Corpore - "Of Identity And Difference" - Sadler's Lectures

This lecture discusses key ideas from the modern philosopher Thomas Hobbes' work De Corpore, specifically ch 11. "Of Identity and Difference", part 7 In this section, Hobbes explores questions and problems of what makes a thing remain the same thing throughout its changes over time or in composition. He considers several different philosophical approaches to the issue, one which focuses on the matter, another which focuses on the form, and a third which focuses on the accidents of the presumed substance in question. He references Plutarch's famous Ship of Theseus problem in the course of his discussion. To support my ongoing work, go to my Patreon site - www.patreon.com/sadler If you'd like to make a direct contribution, you can do so here - www.paypal.me/ReasonIO - or at BuyMeACoffee - www.buymeacoffee.com/A4quYdWoM You can find over 3500 philosophy videos in my main YouTube channel - www.youtube.com/user/gbisadler Purchase Thomas Hobbes' De Corpore - https://amzn.to/4e4LUZj

12. Juni 202610 min
Episode Stanislaw Lem, Summa Technologiae - Defrosting And Duplicating - Sadler's Lectures Cover

Stanislaw Lem, Summa Technologiae - Defrosting And Duplicating - Sadler's Lectures

This video focuses on chapter 6 of Stanislaw Lem's Summa Technologiae, specifically the section “Personality and Information”, which discusses thought experiments that bear on turning a person into information and reconstituting that person somewhere else or at a different point in time. Specifically it examines on a somewhat different kind of thought-experiment, involving freezing a person, taking all of their atoms out of them while keeping records of their configurations, and then reconstituting and thawing them. To support my ongoing work, go to my Patreon site - www.patreon.com/sadler If you'd like to make a direct contribution, you can do so here - www.paypal.me/ReasonIO - or at BuyMeACoffee - www.buymeacoffee.com/A4quYdWoM You can find over 4500 philosophy videos in my main YouTube channel - www.youtube.com/user/gbisadler Purchase Stanislaw Lem's Summa Technologiae - https://amzn.to/4v0FxNz

10. Juni 202610 min
Episode Stanislaw Lem, Summa Technologiae - Killing the Telegraphed Person - Sadler's Lectures Cover

Stanislaw Lem, Summa Technologiae - Killing the Telegraphed Person - Sadler's Lectures

This video focuses on chapter 6 of Stanislaw Lem's Summa Technologiae, specifically the section “Personality and Information”, which discusses thought experiments that bear on turning a person into information and reconstituting that person somewhere else or at a different point in time. Specifically it examines one feature of these types of situations that is morally problematic, namely that it seems like the process has to in some way or another kill the original person who is telegraphed or transported. To support my ongoing work, go to my Patreon site - www.patreon.com/sadler If you'd like to make a direct contribution, you can do so here - www.paypal.me/ReasonIO - or at BuyMeACoffee - www.buymeacoffee.com/A4quYdWoM You can find over 4500 philosophy videos in my main YouTube channel - www.youtube.com/user/gbisadler Purchase Stanislaw Lem's Summa Technologiae - https://amzn.to/4v0FxNz

9. Juni 202613 min
Episode Stanislaw Lem, Summa Technologiae - Paradoxes Of Telegraphing Persons - Sadler's Lectures Cover

Stanislaw Lem, Summa Technologiae - Paradoxes Of Telegraphing Persons - Sadler's Lectures

This video focuses on chapter 6 of Stanislaw Lem's Summa Technologiae, specifically the section “Personality and Information”, which discusses thought experiments that bear on turning a person into information and reconstituting that person somewhere else or at a different point in time. Specifically it examines the paradoxes and problems that arise when we start thinking through the implications of telegraphing (or in Star Trek, transporting) people by transmitting atomic-level information about them to a different place and then reconstituting them (or something that is a copy of them) there. To support my ongoing work, go to my Patreon site - www.patreon.com/sadler If you'd like to make a direct contribution, you can do so here - www.paypal.me/ReasonIO - or at BuyMeACoffee - www.buymeacoffee.com/A4quYdWoM You can find over 4500 philosophy videos in my main YouTube channel - www.youtube.com/user/gbisadler Purchase Stanislaw Lem's Summa Technologiae - https://amzn.to/4v0FxNz

7. Juni 202612 min
Episode William Clifford, The Ethics Of Belief - The Limits Of Inference - Sadler's Lectures Cover

William Clifford, The Ethics Of Belief - The Limits Of Inference - Sadler's Lectures

This lecture discusses the William Clifford's 1877 essay "The Ethics Of Belief", in which he makes and argued for the central claim "it is wrong always, everywhere, and for any one, to believe anything upon insufficient evidence." It focuses on the third section of his essay, titled "The Limits Of Inference" in which Clifford discusses conditions for having well-founded beliefs of matters we don't have direct experience of, for example matters of everyday life, science, or history. We inevitably rely upon the assumption that the future or present will resemble what we have experienced in the past To support my ongoing work, go to my Patreon site - www.patreon.com/sadler If you'd like to make a direct contribution, you can do so here - www.paypal.me/ReasonIO You can find over 4,000 philosophy videos in my main YouTube channel - www.youtube.com/user/gbisadler Get Clifford's The Ethics of Belief - https://amzn.to/41WkkYA

4. Juni 202614 min