Combining Philosophers
Ideas for Johann Fichte, Adam Cross and Gottlob Frege
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16 ideas
7. Existence / A. Nature of Existence / 1. Nature of Existence
11008
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Existence is not a first-order property, but the instantiation of a property [Frege, by Read]
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8643
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Affirmation of existence is just denial of zero [Frege]
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7. Existence / A. Nature of Existence / 2. Types of Existence
19470
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Thoughts in the 'third realm' cannot be sensed, and do not need an owner to exist [Frege]
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7. Existence / A. Nature of Existence / 3. Being / i. Deflating being
5657
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Frege's logic showed that there is no concept of being [Frege, by Scruton]
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7. Existence / A. Nature of Existence / 4. Abstract Existence
8911
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If abstracta are non-mental, quarks are abstracta, and yet chess and God's thoughts are mental [Rosen on Frege]
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8634
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The equator is imaginary, but not fictitious; thought is needed to recognise it [Frege]
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7. Existence / A. Nature of Existence / 6. Criterion for Existence
18899
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Frege takes the existence of horses to be part of their concept [Frege, by Sommers]
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18995
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Frege mistakenly takes existence to be a property of concepts, instead of being about things [Frege, by Yablo]
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7. Existence / C. Structure of Existence / 4. Ontological Dependence
17443
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Many of us find Frege's claim that truths depend on one another an obscure idea [Heck on Frege]
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17445
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Parallelism is intuitive, so it is more fundamental than sameness of direction [Frege, by Heck]
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7. Existence / C. Structure of Existence / 7. Abstract/Concrete / a. Abstract/concrete
10539
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Frege refers to 'concrete' objects, but they are no different in principle from abstract ones [Frege, by Dummett]
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7. Existence / C. Structure of Existence / 7. Abstract/Concrete / b. Levels of abstraction
9578
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If objects are just presentation, we get increasing abstraction by ignoring their properties [Frege]
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7. Existence / D. Theories of Reality / 8. Facts / c. Facts and truths
19471
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A fact is a thought that is true [Frege]
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7. Existence / D. Theories of Reality / 10. Vagueness / d. Vagueness as linguistic
17431
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Vagueness is incomplete definition [Frege, by Koslicki]
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7. Existence / D. Theories of Reality / 11. Ontological Commitment / a. Ontological commitment
13879
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For Frege, ontological questions are to be settled by reference to syntactic structures [Frege, by Wright,C]
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7. Existence / D. Theories of Reality / 11. Ontological Commitment / c. Commitment of predicates
10642
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Second-order quantifiers are committed to concepts, as first-order commits to objects [Frege, by Linnebo]
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