Combining Texts

Ideas for 'Mahaprajnaparamitashastra', 'Criterion of Validity in Reasoning' and 'Ontological Relativity'

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2 ideas

5. Theory of Logic / A. Overview of Logic / 3. Value of Logic

14780	Only study logic if you think your own reasoning is deficient [Peirce]
	Full Idea: It is foolish to study logic unless one is persuaded that one's own reasonings are more or less bad.
	From: Charles Sanders Peirce (Criterion of Validity in Reasoning [1903], II)

5. Theory of Logic / G. Quantification / 4. Substitutional Quantification

21642	If quantification is all substitutional, there is no ontology [Quine]
	Full Idea: Ontology is meaningless for a theory whose only quantification is substitutionally construed.
	From: Willard Quine (Ontological Relativity [1968], p.64), quoted by Thomas Hofweber - Ontology and the Ambitions of Metaphysics 03.5.1 n18
	A reaction: Hofweber views it as none the worse for that, since clearly lots of quantification has no ontological commitment at all. But he says it is rightly called 'a nominalists attempt at a free lunch'.