Full Idea
Among things naturally simple those [may] have unity and priority fully whose processes are relatively indivisible and simple.
Gist of Idea
Things may be naturally unified because they involve an indivisible process
Source
Aristotle (Metaphysics [c.324 BCE], 1052a20)
Book Reference
Aristotle: 'Metaphysics', ed/tr. Lawson-Tancred,Hugh [Penguin 1998], p.286
A Reaction
This is the first of four theories of unity which he offers for discussion. If the process bestows unity, you then have to judge the process as unified. If the indivisibility bestows unity, then things other than processes can be indivisible.