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'fragments/reports', 'On Motion' and 'The Philosophy of Logical Atomism'
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8 ideas
5. Theory of Logic / B. Logical Consequence / 5. Modus Ponens
8078
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Modus ponens is one of five inference rules identified by the Stoics [Chrysippus, by Devlin]
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5. Theory of Logic / D. Assumptions for Logic / 2. Excluded Middle
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Every proposition is either true or false [Chrysippus, by Cicero]
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5. Theory of Logic / E. Structures of Logic / 1. Logical Form
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In a logically perfect language, there will be just one word for every simple object [Russell]
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Romulus does not occur in the proposition 'Romulus did not exist' [Russell]
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5. Theory of Logic / F. Referring in Logic / 1. Naming / a. Names
6102
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You can understand 'author of Waverley', but to understand 'Scott' you must know who it applies to [Russell]
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10423
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There are a set of criteria for pinning down a logically proper name [Russell, by Sainsbury]
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5. Theory of Logic / F. Referring in Logic / 1. Naming / b. Names as descriptive
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Treat description using quantifiers, and treat proper names as descriptions [Russell, by McCullogh]
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5. Theory of Logic / F. Referring in Logic / 1. Naming / e. Empty names
10426
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A name has got to name something or it is not a name [Russell]
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