Full Idea
The solution to the problem of unity will finally depend upon Aristotle's doctrine of form as an active cause, or, as he refers to form within his broader theory of potentiality and actuality, an active potentiality [dunamis] or nature [phusis].
Gist of Idea
Aristotle's solution to the problem of unity is that form is an active cause or potentiality or nature
Source
report of Aristotle (Metaphysics [c.324 BCE], hylom) by Mary Louise Gill - Aristotle on Substance Intro
Book Reference
Gill,Mary Louise: 'Aristotle on Substance: Paradox of Unity' [Princeton 1989], p.9
A Reaction
Her intermediate proposal to the solution of the problem in Idea 16083 is that matter only survives through change potentially and not actually.
Related Idea
Idea 16083 Aristotelian matter seriously threatens the intrinsic unity and substantiality of its object [Gill,ML]