Full Idea
From all the possible universes God chooses this one to obtain as much variety as possible, but with the greatest order possible; that is, it is the means of obtaining the greatest perfection possible.
Gist of Idea
This is the most perfect possible universe, in its combination of variety with order
Source
Gottfried Leibniz (Monadology [1716], §58)
Book Reference
Leibniz,Gottfried: 'Philosophical Writings', ed/tr. Parkinson,G.H.R. [Dent 1973], p.188