Logic and Language
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We begin Part Two and chapter 5 by sharpening our understanding of the logical propositions we use to express our judgments–and to introduce the very specific kind of proposition we’ll be working with for the next three chapters: the categorical proposition.
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As we move into Part Two (“Expressing Truth”) and chapter 5 (“Judgments and Propositions”), we can all benefit from this oldie but goodie. The “Schoolhouse Rock” short features ran on Saturday morning television in the 1970s and 1980s, between the cartoons. They were frequently brilliant both musically and pedagogically, and “The Tale of Mr. Morton”
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In this lecture, we discuss the rules for good definition so that we can define things well ourselves and better understand the definitions others give us. This will bring us to the end of division and definition, and indeed to the end of material logic.
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You’ve been using definitions for as long as you can remember. It’s high time you understood what you’ve been doing.
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As we shift from the Ten Categories to the Five Predicables, we also shift from the perspective of intension to the perspective of extension. In this lecture, we learn the vocabulary and the analytical tools necessary to understand how everything relates (in terms of extension) to the many universals that can be used to describe
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OK, we know the Ten Categories. So what? What can we do with them? But also in this lecture, we work some of the examples from pp. 72 and 76 of our text.
Logic Lectures 