Full Idea
Something always holds better because of that because of which it holds - e.g. that because of which we love something is better loved.
Gist of Idea
The foundation or source is stronger than the thing it causes
Source
Aristotle (Posterior Analytics [c.327 BCE], 72a30)
Book Reference
Aristotle: 'Posterior Analytics (2nd ed)', ed/tr. Barnes,Jonathan [OUP 1993], p.4