Combining Philosophers

Ideas for John Cottingham, Gottlob Frege and Zeno (Citium)

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3 ideas

9. Objects / B. Unity of Objects / 2. Substance / c. Types of substance

4304	Descartes says there are two substance, Spinoza one, and Leibniz infinitely many [Cottingham]

9. Objects / B. Unity of Objects / 3. Unity Problems / e. Vague objects

9891	The first demand of logic is of a sharp boundary [Frege]

9388	Every concept must have a sharp boundary; we cannot allow an indeterminate third case [Frege]