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21815
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Because the One is immobile, it must create by radiation, light the sun producing light [Plotinus]
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Full Idea:
Given this immobility of the Supreme ...what happened then? It must be a circumradiation, which may be compared to the brilliant light encircling the sun and ceaselessly generating from that unchanging substance,
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From:
Plotinus (The Enneads [c.245], 5.1.06)
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A reaction:
This is the answer given to the problem raised in Idea 21814. The sun produces energy, without apparent movement. Not an answer that will satisfy a physicist, but an interesting answer.
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8383
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Day and night are constantly conjoined, but they don't cause one another [Reid, by Crane]
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Full Idea:
A famous example of Thomas Reid: day regularly follows night, and night regularly follows day. There is therefore a constant conjunction between night and day. But day does not cause night, nor does night cause day.
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From:
report of Thomas Reid (Essays on Active Powers 1: Active power [1788]) by Tim Crane - Causation 1.2.2
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A reaction:
Not a fatal objection to Hume, of course, because in the complex real world there are huge numbers of nested constant conjunctions. Night and the rotation of the Earth are conjoined. But how do you tell which constant conjunctions are causal?
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23667
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Regular events don't imply a cause, without an innate conviction of universal causation [Reid]
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Full Idea:
A train of events following one another ever so regularly, could never lead us to the notion of a cause, if we had not, from our constitution, a conviction of the necessity of a cause for every event.
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From:
Thomas Reid (Essays on Active Powers 1: Active power [1788], 5)
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A reaction:
Presumably a theist like Reid must assume that the actions of God are freely chosen, rather than necessities. It's hard to see why this principle should be innate in us, and hard to see why it must thereby be true. A bit Kantian, this idea.
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23679
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The principle of the law of nature is that matter is passive, and is acted upon [Reid]
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Full Idea:
The law of nature respecting matter is grounded upon this principle: That matter is an inert, inactive substance, which does not act, but is acted upon.
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From:
Thomas Reid (Essays on Active Powers 4: Liberty of Agents [1788], 5)
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A reaction:
A clear statement (alongside Euler's) of the 18th century view, still with us, but strikes me as entirely wrong. Their view needs the active power of God to drive the laws. Matter has intrinsic primitive powers, and laws describe patterns of behaviour.
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23670
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Scientists don't know the cause of magnetism, and only discover its regulations [Reid]
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Full Idea:
A Newtonian philosopher …confesses his ignorance of the true cause of magnetic motion, and thinks that his business, as a philosopher, is only to find from experiment the laws by which it is regulated in all cases.
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From:
Thomas Reid (Essays on Active Powers 1: Active power [1788], 6)
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A reaction:
Since there is a 'true cause', that implies that the laws don't actively 'regulate' the magnetism, but only describe its regularity, which I think is the correct view of laws.
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