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Philosophical skepticism

Philosophical skepticism
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Overview

questioning the possibility of certainty, or of judgement, due to inadequate evidence

Overview adapted from Wikipedia (CC BY-SA 4.0; see the article history for authors).

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  1. Holding for true, or the subjective validity of a judgement in relation to conviction (which is, at the same time, objectively valid), has the three following degrees: opinion, belief, and knowledge. Opinion is a consciously insufficient judgement, subjectively as well as objectively. Belief is subjectively sufficient, but is recognized as being objectively insufficient. Knowledge is both subjectively and…

    Immanuel Kant, The Critique of Pure Reason

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  2. There is a species of scepticism, _antecedent_ to all study and philosophy, which is much inculcated by Des Cartes and others, as a sovereign preservative against error and precipitate judgement. It recommends an universal doubt, not only of all our former opinions and principles, but also of our very faculties; of whose veracity, say they, we must assure ourselves, by a chain of reasoning, deduced from some…

    David Hume, An Enquiry Concerning Human Understanding

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  3. You propose then, PHILO, said CLEANTHES, to erect religious faith on philosophical scepticism; and you think, that if certainty or evidence be expelled from every other subject of inquiry, it will all retire to these theological doctrines, and there acquire a superior force and authority. Whether your scepticism be as absolute and sincere as you pretend, we shall learn by and by, when the company breaks up: We shall…

    David Hume, Dialogues Concerning Natural Religion

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Philosophers who discussed Philosophical skepticism

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