Full Idea
With things that do not have matter, they are all unities of a kind simpliciter.
Clarification
'Simpliciter' means 'without qualification'
Gist of Idea
Objects lacking matter are intrinsic unities
Source
Aristotle (Metaphysics [c.324 BCE], 1045b24)
Book Reference
Aristotle: 'Metaphysics', ed/tr. Lawson-Tancred,Hugh [Penguin 1998], p.250
A Reaction
Are all abstract objects unities? Are all sets Aristotelian unities? Only the brackets unify a disparate bunch of things. Are the primes one object or many? If many, each one needs an intrinsic unity to pick it out. The group of primes lacks matter.