Combining Philosophers

Ideas for William S. Jevons, Duncan Pritchard and Robert Pasnau

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6 ideas

26. Natural Theory / A. Speculations on Nature / 6. Early Matter Theories / g. Atomism
Atomists say causation is mechanical collisions, and all true qualities are microscopic [Pasnau]
     Full Idea: The atomist view is that causation is limited to collisions among corpuscles (which is 'mechanism'), and the only bodily qualities are those found at the microcorpuscular level; sensible qualities are in fact sensations.
     From: Robert Pasnau (Metaphysical Themes 1274-1671 [2011], 05.4)
     A reaction: [Part of a full summary of atomism by Pasnau]
26. Natural Theory / A. Speculations on Nature / 7. Later Matter Theories / a. Early Modern matter
In the 17th C matter became body, and was then studied by science [Pasnau]
     Full Idea: In the seventeenth century, matter becomes body, and body becomes the object of natural science.
     From: Robert Pasnau (Metaphysical Themes 1274-1671 [2011], 04.5)
26. Natural Theory / A. Speculations on Nature / 7. Later Matter Theories / b. Corpuscles
Atomism is the commonest version of corpuscularianism, but isn't required by it [Pasnau]
     Full Idea: Atomism is the most common version of corpuscular prime matter, but it is not the only option. Indeed, atomism neither entails nor is entailed by the combination of corpuscularianism and the substratum thesis.
     From: Robert Pasnau (Metaphysical Themes 1274-1671 [2011], 03.2)
     A reaction: The point is that the corpuscles may be endlessly divisible (which Lewis called 'gunk').
If there are just arrangements of corpuscles, where are the boundaries between substances? [Pasnau]
     Full Idea: If all there are corpuscles of various shapes and sizes, variously arranged, it is not easy to see how we might draw the boundary lines, at any given moment, between one substance and another.
     From: Robert Pasnau (Metaphysical Themes 1274-1671 [2011], 24.2)
     A reaction: We still have precisely that problem, and it leads to the nihilism about ordinary objects found in Unger, Van Inwagen and Merricks. I have so far found modern defences of ordinary objects unpersuasive.
26. Natural Theory / C. Causation / 2. Types of cause
Scholastic causation is by changes in the primary qualities of hot, cold, wet, dry [Pasnau]
     Full Idea: There is a scholastic theory of causation. Of Aristotle's Four Causes, the main one is the 'formal' cause, and that consists of changes in the primary, elemental qualities, which are hot, cold, wet and dry.
     From: Robert Pasnau (Metaphysical Themes 1274-1671 [2011], 21.2)
     A reaction: [my summary] It is probably right to call this 'scholastic' rather than 'Aristotelian', as I take Aristotelian essence to run deeper than this, and involve principles as well as qualities.
26. Natural Theory / D. Laws of Nature / 8. Scientific Essentialism / a. Scientific essentialism
Substantial forms were a step towards scientific essentialism [Pasnau]
     Full Idea: Substantial forms might well be viewed as an early step in the development of scientific essentialism.
     From: Robert Pasnau (Metaphysical Themes 1274-1671 [2011], 24.4)
     A reaction: This is the scholastic view of substantial forms, which is much more physical and causal, rather than Aristotle's more abstract view. The rejection of substantial forms led to the 'Humean' view of laws of nature.