Combining Philosophers

Ideas for Roger Penrose, Timothy Williamson and Richard Dedekind

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5 ideas

18. Thought / A. Modes of Thought / 2. Propositional Attitudes

21631

To know, believe, hope or fear, one must grasp the thought, but not when you fail to do them [Williamson]

18. Thought / D. Concepts / 4. Structure of Concepts / h. Family resemblance

21600

'Blue' is not a family resemblance, because all the blues resemble in some respect [Williamson]

18. Thought / E. Abstraction / 3. Abstracta by Ignoring

9189	Dedekind said numbers were abstracted from systems of objects, leaving only their position [Dedekind, by Dummett]

9827	We derive the natural numbers, by neglecting everything of a system except distinctness and order [Dedekind]

18. Thought / E. Abstraction / 8. Abstractionism Critique

9979	Dedekind has a conception of abstraction which is not psychologistic [Dedekind, by Tait]