Again, whence does Matter derive its unifying power? It is assuredly not the ABSOLUTE UNITY, but has only that of participation in Unity. Enneads VI,1,26
Anything that can be described as a unity is so in the precise degree in which it holds a characteristic being; the less or more the degree of the being, the less or more the unity. Soul, while distinct from unity’s very self, is a thing of the greater unity in proportion as it is of the greater, the authentic, being. Absolute unity it is not: it is soul and one soul, the unity in some sense a concomitant; there are two things, soul and soul’s unity as there is body with body’s unity. The looser aggregates, such as a choir, are furthest from unity, the more compact are the nearer; soul is nearer yet but still a participant. Enneads VI,9,1