Sadler's Lectures
Lectures on classic and contemporary philosophical texts and thinkers by Gregory B. Sadler
I'm that YouTube Philosophy Guy! Find more than 3,000 videos in my main channel. Support my video and podcast work! https://www.patreon.com/sadler or https://www.buymeacoffee.com/A4quYdWoM
Learn more about this podcast channel - https://youtu.be/qRvL0gqlyrw and https://gregorybsadler.substack.com/p/the-sadlers-lectures-podcast
Due to popular demand - and with the work underwritten by my Patreon supporters - I have been converting my videos into MP3 files listeners can listen to anywhere they want!
I have a second podcast, Mind & Desire, publishing original episodes on a variety of topics in philosophy, which you can find here - https://gregorybsadler.substack.com/podcast
Learn more about this podcast channel - https://youtu.be/qRvL0gqlyrw and https://gregorybsadler.substack.com/p/the-sadlers-lectures-podcast
Due to popular demand - and with the work underwritten by my Patreon supporters - I have been converting my videos into MP3 files listeners can listen to anywhere they want!
I have a second podcast, Mind & Desire, publishing original episodes on a variety of topics in philosophy, which you can find here - https://gregorybsadler.substack.com/podcast
Episodes
Mentioned books

Oct 24, 2025 • 18min
Seneca, Letter 109 - Fellowship And Wise People - Sadler's Lectures
This lecture discusses key ideas from the ancient Stoic philosopher Seneca's Letters, this one looking at Letter 109
It focuses specifically on whether or not a wise person, according to the Stoics, would want or need to be involved with other people, particularly other wise people, to which his answer (perhaps surprisingly to some) is yes. He provides some reasonings for the position he articulates on this, including how the wise person, despite in a strict sense not needing anything or anyone else, will nevertheless desire to share their life with others, and will also benefit from the advice and fellowship of other wise people.
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 Seneca's Letters - amzn.to/2Myx6os

Oct 23, 2025 • 19min
Seneca, Letter 99 - Consolation For Loss Of A Child - Sadler's Lectures
This lecture discusses key ideas from the ancient Stoic philosopher Seneca's Letters, this one looking at Letter 99
In this letter, after a brief introductory paragraph, Seneca reproduces a letter sent to a different correspondent Marullus when he had lost a young child. Although Seneca says that his goal is not to console but rather to offer criticism, he in effect does both of these, offering a number of considerations that can prove helpful to a person who is grieving the loss of a loved one.
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 Seneca's Letters - amzn.to/2Myx6os

Oct 21, 2025 • 14min
Seneca, Letter 6 - Friendship, Progress, and Sharing Knowledge - Sadler's Lectures
Explore the transformative nature of moral progress with Seneca’s insights on friendship. Learn how genuine connections are built on sharing knowledge and personal growth. Discover why recognizing our faults is a sign of real advancement. Sadler emphasizes the importance of living alongside mentors and exchanging wisdom. From annotated books to the reciprocal nature of true friendships, this discussion highlights the joy of learning together and supporting one another on the path to understanding.

Oct 20, 2025 • 14min
Seneca, Letter 3 - True and False Friendship - Sadler's Lectures
This lecture discusses key ideas from the ancient Stoic philosopher Seneca's Letters, this one looking at Letter 3
It focuses specifically on Seneca discussing a paradox of calling someone a friend but not trusting them with information. This leads Seneca to say that his correspondent, Lucilius doesn't seem to know what genuine friendship really is or involves, and to make a distinction between the common but mistaken use of the term "friend" and the proper sense of the term. He also suggests that many make mistakes by first loving someone and trusting them as a friend and only later on forming a correct judgement of them as a person, when the order of this ought to be reversed.
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 Seneca's Letters - https://amzn.to/2Myx6os

Oct 11, 2025 • 19min
Soren Kierkegaard The Present Age - Silence, Speaking, and Chatter - Sadler's Lectures
This lecture discusses key ideas from the 19th century philosopher, essayist, and theologian, Søren Kierkegaard's review essay "The Present Age" contained in his review of Two Ages: The Age of Revolution and the Present Age
It focuses specifically on what Kierkegaard calls the "nullification of the passionate disjunction between being silent and speaking', which is "chattering".
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 3000 philosophy videos in my main YouTube channel - www.youtube.com/user/gbisadler
You can get a copy of the Two Ages here - amzn.to/3eShxHv

Oct 10, 2025 • 16min
Thomas Hobbes, Leviathan - Wit, Judgement, And Fancy - Sadler's Lectures
This lecture discusses key ideas from the modern philosopher Thomas Hobbes' work Leviathan
It focuses specifically on first part of chapter 8 where he discusses what he calls "intellectual virtues", meaning the abilities of the mind that people praise, which he frames in terms of "wit", and distinguishes into natural and artificial. Natural wit in turn is divided into fancy which focuses upon similarities and judgement which focuses on differences. Judgement is more important that fancy for wit.
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' Leviathan - amzn.to/3uhKmDE

Oct 9, 2025 • 14min
Thomas Hobbes, Leviathan - The Ends Of Discourse - Sadler's Lectures
This lecture discusses key ideas from the modern philosopher Thomas Hobbes' work Leviathan
It focuses specifically on chapter 7, where he identifies and discusses what he calls the ends of mental and verbal discourse, and clarifies when the discourse people engage in results in mere opinion or produces something more reliable that that, i.e. knowledge or science.
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' Leviathan - amzn.to/3uhKmDE

Oct 8, 2025 • 17min
Thomas Hobbes, Leviathan - Simple Passions Diversified - Sadler's Lectures
This lecture discusses key ideas from the modern philosopher Thomas Hobbes' work Leviathan
It focuses specifically on on the second part of chapter 6, where Hobbes tells us that the basic passions are diversified into a number of other passions in four main manners.
1. called from the opinion men have of the likelihood of attaining what they desire
2. from the object loved or hated
3. from the consideration of many of them together
4. from the alteration or succession itself
He also discusses how passions figure into what he calls "deliberation" and makes the claim that a person's "will" is simply the last passion in the succession that determines their action. H finishes by discusses different modes of language by which people signify what their passions are.
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' Leviathan - amzn.to/3uhKmDE

Oct 7, 2025 • 15min
Thomas Hobbes, Leviathan - Motion, Endeavor, and Passions - Sadler's Lectures
This lecture discusses key ideas from the modern philosopher Thomas Hobbes' work Leviathan
It focuses specifically on chapter 6, in which Hobbes develops his basic philosophy of human and animal action, which stems from the senses and movements of the body, and then flows into endeavor of appetite and aversion. These then give rise to other affects such as love, contempt, and hatred, joy and grief, and to differing judgements about various forms of good and evil.
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' Leviathan - amzn.to/3uhKmDE

Oct 5, 2025 • 17min
Thomas Hobbes, Leviathan - Reason and Science - Sadler's Lectures
This lecture discusses key ideas from the modern philosopher Thomas Hobbes' work Leviathan
It focuses specifically on chapter 5, where he examines in detail what reason or reasoning is, and what science is. Hobbes views reasoning as something analogous to "reckoning" by adding and subtracting sums, not just of numbers, but of many other things as well, in particular names, conjunctions of them into "consequences", and ultimately entire arguments or syllogisms.
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' Leviathan - amzn.to/3uhKmDE


