Full Idea
It is from many particulars that the universal becomes plain. Universals are valuable because they make the explanation plain.
Gist of Idea
We learn universals from many particulars
Source
Aristotle (Posterior Analytics [c.327 BCE], 88a05)
Book Reference
Aristotle: 'Posterior Analytics (2nd ed)', ed/tr. Barnes,Jonathan [OUP 1993], p.43