21821
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Plato's Parmenides has a three-part theory, of Primal One, a One-Many, and a One-and-Many [Plato, by Plotinus]
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Full Idea:
The Platonic Parmenides is more exact [than Parmenides himself]; the distinction is made between the Primal One, a strictly pure Unity, and a secondary One which is a One-Many, and a third which is a One-and-Many.
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From:
report of Plato (Parmenides [c.364 BCE]) by Plotinus - The Enneads 5.1.08
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A reaction:
Plotinus approves of this three-part theory. Parmenides has the problem that the highest Being contains no movement. By placing the One outside Being you can give it powers which an existent thing cannot have. Cf the concept of God.
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12774
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Without a substantial chain to link monads, they would just be coordinated dreams [Leibniz]
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Full Idea:
If that substantial chain [vinculum substantiale] for monads did not exist, all bodies, together with all of their qualities, would be nothing but well-founded phenomena, like a rainbow or an image in a mirror, continual dreams perfectly in agreement.
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From:
Gottfried Leibniz (Letters to Des Bosses [1715], 1712.02.05)
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A reaction:
[The first appearance, apparently, of the 'susbtantial chain' in his writings] I take this to be a hugely significant move, either a defeat for monads, or the arrival of common sense. Spiritual monads must unify things, so they can't just be 'parallel'.
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12777
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Monads do not make a unity unless a substantial chain is added to them [Leibniz]
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Full Idea:
Monads do not constitute a complete composite substance, since they make up, not something one per se, but only a mere aggregate, unless some substantial chain is added.
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From:
Gottfried Leibniz (Letters to Des Bosses [1715], 1712.05.26)
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A reaction:
This is the clearest statement in the Des Bosses letters of the need for something extra to unite monads. Since the main role of monads was to replace substances, which are only postulated to provide unity, this is rather a climb-down.
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