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Ideas for 'On the Individuation of Attributes', 'Conjectures and Refutations' and 'Russell's Mathematical Logic'

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8. Modes of Existence / E. Nominalism / 5. Class Nominalism

18442	You only know an attribute if you know what things have it [Quine]
	Full Idea: May we not say that you know an attribute only insofar as you know what things have it?
	From: Willard Quine (On the Individuation of Attributes [1975], p.106)
	A reaction: Simple, and the best defence of class nominalism (a very implausible theory) which I have encountered. Do I have to know all the things? Do I not know 'red' if I don't know tomatoes have it?