Concept
Primary–secondary quality distinction

Overview
epistemological and metaphysical dualism in modern philosophy
Overview adapted from Wikipedia (CC BY-SA 4.0; see the article history for authors).
Possible passages
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9. Some there are who make a distinction betwixt _primary_ and _secondary_ qualities(539). By the former they mean extension, figure, motion, rest, solidity or impenetrability, and number; by the latter they denote all other sensible qualities, as colours, sounds, tastes, and so forth.
George Berkeley, The Works of George Berkeley. Vol. 1 of 4
States what Primary–secondary quality distinction is; the author is tied to Primary–secondary quality distinction in the knowledge graph.
But all philosophy is either cognition on the basis of pure reason, or the cognition of reason on the basis of empirical principles. The former is termed pure, the latter empirical philosophy. The philosophy of pure reason is either propædeutic, that is, an inquiry into the powers of reason in regard to pure à priori cognition, and is termed critical philosophy; or it is, secondly, the system of pure reason—a…
Immanuel Kant, The Critique of Pure Reason
States what Primary–secondary quality distinction is; the author is tied to Primary–secondary quality distinction in the knowledge graph.
On the one hand there is a systematic discrediting of the ultimate claims of the knowledge function, and this not from external physiological or psychological reasons such as are sometimes alleged against its capacity, but on the basis of its own interior logic. But on the other hand, a strictly logical criterion is deliberately adopted and employed as the fundamental and final criterion for the philosophic…
John Dewey, The Influence of Darwin on Philosophy, and other essays in contemporary thought
Close in meaning to Primary–secondary quality distinction; the term itself is not named.
Related ideas
- George Berkeley
- Gottfried Wilhelm Leibniz
- Isaac Newton
- Immanuel Kant
- John Locke
- Ancient Greek philosophy
- Leucippus
- Physical property
- Metaphysics
- Motion
- Number
- René Descartes
- A Treatise of Human Nature
- Galileo Galilei
- Extension (metaphysics)
- Reality
- Transcendental idealism
- Color
- Opticks
- David Hume
- Democritus
- Epistemology
- Encyclopædia Britannica
- The Assayer
Place in the tradition
Part of Naïve realism.
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