Lectures on classic and contemporary philosophical texts and thinkers by Gregory B. Sadler

Sadler's Lectures

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/A4quYdWoMLearn more about this podcast channel - https://youtu.be/qRvL0gqlyrw and https://gregorybsadler.substack.com/p/the-sadlers-lectures-podcastDue 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 phil...

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Lectures on classic and contemporary philosophical texts and thinkers by Gregory B. Sadler

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Education

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www.buymeacoffee.com

Latest episode

Jul 10, 2026

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Episodes

Rainer Maria Rilke on Solitude, Slowing Down, and Making Space - Sadler's Lectures 15.11.2025

This is a podcast of a guest sermon, given by invitation to the Unitarian Universalist Community of the Catskills. A guest sermon invited by the Unitarian Universalist Community of the Catskills, Aug 9, 2015. In it, I discuss Rainer Maria Rilke's conception of "solitude" (Einsamkeit), and its relevance to our contemporary lives. Explaining how the two dimensions of slowing down temporally and maki...

Thomas Aquinas Summa Theologiae - Knowledge As A Cause Of Love 14.11.2025

This lecture discusses key ideas from the medieval Christian philosopher and theologian Thomas Aquinas' Summa Theologiae, 1st part, question 27, "The Causes Of Love", and examines his discussions in article 2, which centers on whether and how knowledge can be a cause of love. To support my ongoing work, go to my Patreon site - www.patreon.com/sadler If you'd like to make a direct contribution, you...

"Whoever is Angry with His Brother” Early Christian Insights on Anger - Sadler's Lectures 13.11.2025

This is a podcast of a guest sermon, given by invitation to the Unitarian Universalist Community of Rock Tavern. In it, I discuss anger as a common problem not only of our own times, but of all times. Christian teachings on anger present us with some "hard sayings," and several 4th century thinkers -- John Cassian, Augustine of Hippo, and John Chrysostom -- are very helpful for understanding how t...

Thomas Aquinas Summa Theologiae - Likeness As A Cause Of Love 11.11.2025

This lecture discusses key ideas from the medieval Christian philosopher and theologian Thomas Aquinas' Summa Theologiae, 1st part, question 27, "The Causes Of Love", and examines his discussions in article 3, which centers on whether and how likeness (similitudo) is a cause of love, particularly between similar people. He addresses the issue raised by the classical proverb "potter against potter"...

Thomas Aquinas Summa Theologiae - The Causes Of Love - Sadler's Lectures 10.11.2025

This lecture discusses key ideas from the medieval Christian philosopher and theologian Thomas Aquinas' Summa Theologiae, 1st part, question 27, "The Causes Of Love", and examines his discussions in articles 1 and 4, which center on the issues whether goodness in some sense is a cause of love and whether any other passion is the case of love. Aquinas' answers are that in every case, some good is t...

Thomas Aquinas Summa Theologiae - Love, Dilection, Charity, and Friendship - Sadler's Lectures 09.11.2025

This lecture discusses key ideas from the medieval Christian philosopher and theologian Thomas Aquinas' Summa Theologiae, 1st part of the second part, question 26 "Of Love", and examines his discussions in articles 3-4, which center on different senses or modalities of love (amor). He makes a distinction between four terms: love, dilection (dilectio), friendship (amicitia) and charity (caritas), a...

Thomas Aquinas Summa Theologiae - Love, The Appetites, and Passion - Sadler's Lectures 08.11.2025

This lecture discusses key ideas from the medieval Christian philosopher and theologian Thomas Aquinas' Summa Theologiae, 1st part of the second part, question 26 "Of Love", and examines his discussions in articles 1-2, which center on determining where love is within the things and specifically within human being. Thomas will frame this in terms of nature and natural love, the sensitive concupisc...

Thomas Aquinas Summa Theologiae - God Loving Some Things More - Sadler's Lectures 06.11.2025

This lecture discusses key ideas from the medieval Christian philosopher and theologian Thomas Aquinas' Summa Theologiae, 1st part, question 20, "God's Love", and examines his discussions in articles 3-4, which center on the issues of whether God loves some things more than others or not, and whether God loves better things more than others. For Thomas, this centers upon a distinction about ways i...

Thomas Aquinas Summa Theologiae - God's Love For Other Things - Sadler's Lectures 05.11.2025

This lecture discusses key ideas from the medieval Christian philosopher and theologian Thomas Aquinas' Summa Theologiae, 1st part, question 20, "God's Love", and examines his discussion in article 2, which examines the question whether God loves things other than God. Thomas considers four main lines of reasoning that would say that God either doesn't love other things or only loves some other th...

Thomas Aquinas Summa Theologiae - Whether Love Is In God - Sadler's Lectures 03.11.2025

This lecture discusses key ideas from the medieval Christian philosopher and theologian Thomas Aquinas' Summa Theologiae, 1st part, question 20 "God's Love", and examines on his discussion in article 1, which addresses the issue whether love is in God. Aquinas considers several arguments against love being in God and addresses each of them. He also explains how it is that love is in God by looking...

Heloise and Abelard - Letters 5-6 - Struggling Against Passion - Sadler's Lectures 01.11.2025

This lecture discusses key ideas from the sequence of letters between two great Medieval intellectuals, lovers, and religious Heloise D'Argenteuil and Peter Abelard It focuses specifically on the fifth and sixth letters, which are by Heloise and Abelard respectfully. In these letters both of the married lovers have opted for leaving their previous amorous and conjugal love behind and shifting thei...

Heloise and Abelard - Letter 4 - Love, Despair, and Repentance - Sadler's Lectures 30.10.2025

This lecture discusses key ideas from the sequence of letters between two great Medieval intellectuals, lovers, and religious Heloise D'Argenteuil and Peter Abelard It focuses specifically on the fourth letter, which is by Heloise. In this letter Heloise reaffirms her love for her husband Abelard, and asserts that life will have little value or attraction for her after he dies. She explains what e...

Heloise and Abelard - Letter 3 - Love, Virtue, Duty, and God - Sadler's Lectures 29.10.2025

This lecture discusses key ideas from the sequence of letters between two great Medieval intellectuals, lovers, and religious Heloise D'Argenteuil and Peter Abelard It focuses specifically on the third letter, which is by Abelard. It discusses Heloise's proposal that although they have taken monastic vows, they can rightly enjoy some married life together through writing letters to each other, and...

Heloise and Abelard - Letter 2 - Married Love and Religious Life - Sadler's Lectures 27.10.2025

This lecture discusses key ideas from the sequence of letters between two great Medieval intellectuals, lovers, and religious Heloise D'Argenteuil and Peter Abelard It focuses specifically on the second letter, which is by Heloise. It discusses the arguments that she advances in the letter, which center on her view that they can continue to enjoy their married relationship through writing letters...

Heloise and Abelard - Letter 1 - A History Of Abelard's Calamities - Sadler's Lectures 26.10.2025

This lecture discusses key ideas from the sequence of letters between two great Medieval intellectuals, lovers, and religious Heloise D'Argenteuil and Peter Abelard It focuses specifically on the first letter, which is by Abelard. It discusses the consolation Abelard attempts to provide his fried by recounting the story of his life, which includes his romantic, intellectual, and sexual involvement...

Seneca, Letter 109 - Fellowship And Wise People - Sadler's Lectures 24.10.2025

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 articulat...

Seneca, Letter 99 - Consolation For Loss Of A Child - Sadler's Lectures 23.10.2025

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...

Seneca, Letter 6 - Friendship, Progress, and Sharing Knowledge - Sadler's Lectures 21.10.2025

This lecture discusses key ideas from the ancient Stoic philosopher Seneca's Letters, this one looking at Letter 6 It focuses specifically on how we make moral progress, and that we ought to want to share that progress with our friends. He also clarifies that when we learn something we ought to want to share that as well with our friends. A better way to do this than simply learning precepts is to...

Seneca, Letter 3 - True and False Friendship - Sadler's Lectures 20.10.2025

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 th...

Soren Kierkegaard The Present Age - Silence, Speaking, and Chatter - Sadler's Lectures 11.10.2025

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 ongo...

Thomas Hobbes, Leviathan - Wit, Judgement, And Fancy - Sadler's Lectures 10.10.2025

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 simi...

Thomas Hobbes, Leviathan - The Ends Of Discourse - Sadler's Lectures 09.10.2025

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...

Thomas Hobbes, Leviathan - Simple Passions Diversified - Sadler's Lectures 08.10.2025

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 con...

Thomas Hobbes, Leviathan - Motion, Endeavor, and Passions - Sadler's Lectures 07.10.2025

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...

Thomas Hobbes, Leviathan - Reason and Science - Sadler's Lectures 05.10.2025

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 int...

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