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Ideas for '', 'Grundlagen der Arithmetik (Foundations)' and 'Reply to First Objections'

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3 ideas

28. God / B. Proving God / 2. Proofs of Reason / b. Ontological Proof critique
Existence is not a first-level concept (of God), but a second-level property of concepts [Frege, by Potter]
     Full Idea: For Frege (unlike Kant) existence is a genuine concept, but of the second level, not the first. Since God's perfections are of the first level, existence is not a candidate to be one of them.
     From: report of Gottlob Frege (Grundlagen der Arithmetik (Foundations) [1884], §053) by Michael Potter - The Rise of Analytic Philosophy 1879-1930 09 'App'
     A reaction: That is, God's perfections are of God, but existence is a concept of concepts (that they are instantiated). So existence is a metaconcept. I'm not convinced. If I bake a successful cake, its existence is its most wonderful feature.
Because existence is a property of concepts the ontological argument for God fails [Frege]
     Full Idea: Because existence is a property of concepts the ontological argument for the existence of God breaks down.
     From: Gottlob Frege (Grundlagen der Arithmetik (Foundations) [1884], §53)
     A reaction: The point being that existence (like number) is not a property of actual things. His proposition sounds rather dubious. The concept of unicorns exists quite entertainingly; it is the failure of actual unicorns to exist that is so heartbreaking.
28. God / B. Proving God / 3. Proofs of Evidence / a. Cosmological Proof
We can't prove a first cause from our inability to grasp infinity [Descartes]
     Full Idea: My inability to grasp an infinite chain of successive causes without a first cause does not entail that there must be a first cause, just as my inability to grasp infinite divisibility of finite things does not make that impossible.
     From: René Descartes (Reply to First Objections [1641], 106)