• Lectures by Chapter
    • Chapter 1: The Art and Science of Sound Reasoning
    • Part 1: Finding Clarity
      • Chapter 2: Concepts and Terms
      • Chapter 3: Knowing What We’re Talking About
      • Chapter 4: The Arts of Division and Definition
    • Part 2: Expressing Truth
      • Chapter 5: Judgments and Propositions
      • Chapter 6: Opposition and Equivalence
    • Part 3: Expanding Knowledge
      • Chapter 7: The Categorical Syllogism
      • Chapter 8: Compound Syllogisms
      • Chapter 9: Advanced Deductive Arguments
      • Chapter 10: Inductive Reasoning
    • Part 4: Detecting Fallacies
      • Chapter 11: Informal Fallacies
  • About our text
  • About Mark Grannis

Logic Lectures

  • October 27, 2024

    Lecture 3.3: The Extrinsic Accidents

    In this lecture, we cover the last six of the Ten Categories.

    Read more →

  • October 23, 2024

    Lecture 3.2: The Intrinsic Accidents

    We continue our survey of Aristotle’s Ten Categories by looking at the three intrinsic accidents of quantity, quality, and relation.

    Read more →

  • October 22, 2024

    Lecture 3.1: Substance, Accidents, and the Ten Categories

    If you really want to know what you’re talking about, how should you go about it? How many different kinds of things are there to know about something? Aristotle wondered that too, and his answer has help up pretty well for 2500 years.

    Read more →

  • October 9, 2024

    Lecture 2.6: Other Fallacies of Clarity

    In this final lecture of chapter 2, we cover three more fallacies of clarity plus the “golden rule” for dealing with ambiguities. I also offer some advice on how to make a study guide for this or any other course.

    Read more →

  • October 7, 2024

    Lecture 2.5: The Fallacy of Equivocation

    In this lecture, we cover our first widely recognized fallacy: equivocation. Along the way, we also cover the general topic of fallacies, and why there is no universally recognized list of them. Finally, we cover the extremely important principle of “hermeneutical generosity.”

    Read more →

  • October 3, 2024

    Lecture 2.4: Terms, Signification, and Supposition

    Turning from concepts to the terms that we use to communicate them, we learn two more ways to analyze whether we really know what we’re talking about.

    Read more →

Previous Page Next Page

Instagram / X

Designed with WordPress

  • Subscribe Subscribed
    • Logic Lectures
    • Already have a WordPress.com account? Log in now.
    • Logic Lectures
    • Subscribe Subscribed
    • Sign up
    • Log in
    • Report this content
    • View site in Reader
    • Manage subscriptions
    • Collapse this bar