Combining Texts

Ideas for 'fragments/reports', 'The Spirit of Democratic Capitalism' and 'Whitehead: process and cosmology'

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7. Existence / A. Nature of Existence / 6. Criterion for Existence

5992	Chrysippus says action is the criterion for existence, which must be physical [Chrysippus, by Tieleman]
	Full Idea: Chrysippus regarded power to act and be acted upon as the criterion for existence or being - a test satisfied by bodies alone.
	From: report of Chrysippus (fragments/reports [c.240 BCE]) by Teun L. Tieleman - Chrysippus
	A reaction: This defines existence in terms of causation. Is he ruling out a priori a particle (say) which exists, but never interacts with anything? If so, he is inclining towards anti-realism.