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Ideas for 'fragments/reports', 'Critique of Pure Reason' and 'Kant and the Critique of Pure Reason'

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4 ideas

12. Knowledge Sources / B. Perception / 2. Qualities in Perception / b. Primary/secondary
18264 We know the shape of a cone from its concept, but we don't know its colour [Kant]
     Full Idea: The shape of a cone we can form for ourselves in intuition, unassisted by any experience, according to its concept alone, but the colour of this cone must be previously given in some experience or other.
     From: Immanuel Kant (Critique of Pure Reason [1781], B743/A715)
     A reaction: Coffa says this gives a 'transcendental twist' to the primary/secondary distinction. The distinction doesn't seem to help much, since you clearly don't know the shape of a pebble from its concept. Is the angle of the cone part of its concept?
12. Knowledge Sources / B. Perception / 2. Qualities in Perception / d. Secondary qualities
5532 Colours and tastes are not qualities of things, but alterations of the subject [Kant]
     Full Idea: Things like colors, taste etc. are correctly considered not as qualities of things but as mere alterations of our subject, which can even be different in different people.
     From: Immanuel Kant (Critique of Pure Reason [1781], B045/A29)
     A reaction: This acceptance of the category of 'secondary' qualities shows that Kant is not totally daft about reality. He 'considers them as' alterations in the subject, but how does he view primary qualities? Not, I think, as features of the noumenon.
12. Knowledge Sources / B. Perception / 5. Interpretation
2774 Kant says the cognitive and sensory elements in experience can't be separated [Kant, by Dancy,J]
     Full Idea: Kant maintains that it is impossible to draw a suitable distinction between the cognitive and sensory 'elements' in sensory experience.
     From: report of Immanuel Kant (Critique of Pure Reason [1781]) by Jonathan Dancy - Intro to Contemporary Epistemology 8.4
12. Knowledge Sources / B. Perception / 6. Inference in Perception
23454 Appearances have a 'form', which indicates a relational order [Kant]
     Full Idea: That which allows the manifold of appearance to be intuited as ordered in certain relations I call the 'form' of appearance.
     From: Immanuel Kant (Critique of Pure Reason [1781], B034/A20)
     A reaction: An important idea, which figures prominently in Wittgenstein's Tractatus. Presumably the noumenon is responsible for generating the form in the appearances, and we infer the order of the world thereby (though we can't prove it).