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Full Idea
An aggregate, but not a composite substance, is resolved into parts. A composite substance only needs the coming together of parts, but is not essentially constituted by them, otherwise it would be an aggregate.
Gist of Idea
A composite substance is a mere aggregate if its essence is just its parts
Source
Gottfried Leibniz (Letters to Des Bosses [1715], 1716.05.29)
Book Ref
Leibniz,Gottfried: 'Philosophical Essays', ed/tr. Arlew,R /Garber,D [Hackett 1989], p.203
A Reaction
The point is that there is more to some things than there mere parts. Only some unifying principle, in addition to the mere parts, bestows a unity. Mereology is a limited activity if it has nothing to say about this issue.
| 12774 | Without a substantial chain to link monads, they would just be coordinated dreams [Leibniz] |
| 12775 | Things seem to be unified if we see duration, position, interaction and connection [Leibniz] |
| 12776 | Every substance is alive [Leibniz] |
| 12777 | Monads do not make a unity unless a substantial chain is added to them [Leibniz] |
| 12753 | A substantial bond of powers is needed to unite composites, in addition to monads [Leibniz] |
| 12781 | A composite substance is a mere aggregate if its essence is just its parts [Leibniz] |
| 12779 | There is a reason why not every possible thing exists [Leibniz] |
| 12785 | Truth is mutually agreed perception [Leibniz] |
| 12784 | Allow no more miracles than are necessary [Leibniz] |
| 12782 | Monads control nothing outside of themselves [Leibniz] |
| 12778 | There is active and passive power in the substantial chain and in the essence of a composite [Leibniz] |
| 12783 | Primitive force is what gives a composite its reality [Leibniz] |
| 12780 | We can grasp the wisdom of God a priori [Leibniz] |