Logic Lectures

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

Judgments and Propositions


Before beginning Chapter 5, you might enjoy The Tale of Mr. Morton.


5.1  Subjects, Predicates, and the Categorical Proposition


5.2  Quality, Quantity, and Standard Logical Form


5.3  Visualizing the Four Basic Categorical Propositions


5.4  Supposition (Again) and Distribution


5.5  Translation to Standard Logical Form


← Chapter 4: The Arts of Division and Definition

Chapter 6: Opposition and Equivalence →

About

Mark Grannis teaches logic and history at The Heights School in Potomac, Maryland. He is the author of The Reasonable Person: Traditional Logic for Modern Life and its Teacher Supplement.

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Recent Lectures

  • Lecture 11.4: Fallacies of Presumption
  • Lecture 11.3: Fallacies of Misdirection
  • Lecture 11.2: The Emotive Fallacies
  • Lecture 11.1: The Ad Fontem Fallacies
  • Lecture 10.5: Inductive Reasoning About Causation

Logic Lectures

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  • Lectures by Chapter
    • Chapter 1: The Art and Science of Sound Reasoning
    • Chapter 5: Judgments and Propositions
    • Chapter 6: Opposition and Equivalence
    • Chapter 7: The Categorical Syllogism
    • Chapter 8: Compound Syllogisms
    • Chapter 9: Advanced Deductive Arguments
    • Chapter 10: Inductive Reasoning
    • Chapter 11: Informal Fallacies
  • About our text
  • About Mark Grannis

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