Frustra fit per plura (III)

Here's another of Auriol's statements of ontological parsimony:

‘multitudo ponenda non est nisi ratio evidens necessaria illud probet aliter per pauciora salvari non posse.  Deus enim et natura nihil faciunt frustra’ (S II.14.1.ii)

(Mark Henninger, Relations: Medieval Theories (1989), p. 156 n. 25.)