Cap. III Sol. Rat. 8 close: Augustine — multitude of reject shows justice; Epist. 190
Finally: why God, who could save all, yet willed to predestine few to life against the multitude of the rejected — Augustine gives two reasons, so there is little need to take refuge in foresight of good and bad works. Thus he: God willed this, that by the very multitude of the rejected it might be shown how little moment any number of those most justly damned has with the just God — and that those redeemed from that damnation might understand from this that what they see rendered to so great a part of it was due to that universal mass (Epist. 190).
Latin
Postremo, cur Deus qui posset omnes, paucos tamen prae multitudine rejectorum voluerit ad vitam praedestinare, duae rationes ab Augustino afferuntur, ut minime opus sit ad praescientiam bonorum et malorum operum confugere. Sic igitur ille, Hoc voluit Deus, ut ipsa rejectorum multitudine ostenderetur, quam nullius momenti sit apud Deum justum quantalibet numerositas justissime damnatorum: Atque ut suaderet ut hinc intelligant qui ex ipsa damnatione redimuntur, hoc fuisse debitum massae illi universae, quod tam magnae parti ejus redditum cernerent, Epist. 190.