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'Logic (Encyclopedia I)', 'Function and Concept' and 'Logic in Mathematics'
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6 ideas
18. Thought / D. Concepts / 1. Concepts / a. Nature of concepts
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We don't think with concepts - we think the concepts [Hegel]
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Active thought about objects produces the universal, which is what is true and essential of it [Hegel]
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18. Thought / D. Concepts / 3. Ontology of Concepts / c. Fregean concepts
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Concepts are the ontological counterparts of predicative expressions [Frege, by George/Velleman]
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An assertion about the concept 'horse' must indirectly speak of an object [Frege, by Hale]
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A concept is a function whose value is always a truth-value [Frege]
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18. Thought / D. Concepts / 4. Structure of Concepts / a. Conceptual structure
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Unlike objects, concepts are inherently incomplete [Frege, by George/Velleman]
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