A **categorical proposition** is a part of deductive reasoning that contains two categorical terms, the subject and the predicate, and affirms or denies the latter of the former. Categorical propositions occur in categorical syllogisms and both are discussed in Aristotle's *Prior Analytics.*

Examples:

- Midshipman Davis serves on H.M.S. Invincible. (
*subject:*Midshipman Davis;*predicate:*serves on H.M.S. Invincible) - Some politicians are corrupt. (
*subject:*politicians;*predicate:*corruptness) - Nobody ever got fired for buying IBM. (
*subject:*people;*predicate:*getting fired for buying IBM)

The subject and predicate are called the *terms* of the proposition. The subject is what the proposition is about. The predicate is what the proposition affirms or denies about the subject. A categorical proposition thus claims something about things or ways of being: it affirms or denies something about something else.

Categorical propositions are distinguished from hypothetical propositions (if-then statements that connect propositions rather than terms) and disjunctive propositions (either-or statements, claiming exclusivity between propositions).

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### Famous quotes containing the words proposition and/or categorical:

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