Combining Texts

Ideas for 'Function and Concept', 'works' and 'Actualism and Possible Worlds'

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2 ideas

7. Existence / A. Nature of Existence / 3. Being / a. Nature of Being

14664	Necessary beings (numbers, properties, sets, propositions, states of affairs, God) exist in all possible worlds [Plantinga]
	Full Idea: A 'necessary being' is one that exists in every possible world; and only some objects - numbers, properties, pure sets, propositions, states of affairs, God - have this distinction.
	From: Alvin Plantinga (Actualism and Possible Worlds [1976], 2)
	A reaction: This a very odd list, though it is fairly orthodox among philosophers trained in modern modal logic. At the very least it looks rather parochial to me.

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

18899	Frege takes the existence of horses to be part of their concept [Frege, by Sommers]
	Full Idea: Frege regarded the existence of horses as a property of the concept 'horse'.
	From: report of Gottlob Frege (Function and Concept [1891]) by Fred Sommers - Intellectual Autobiography 'Realism'