Cap. III Rej. Rat. 1: sufficient aids fail for pagans/infants — Augustine De nat.
Those who put on God a good-pleasure will for everyone's salvation infer it from "sufficient helps for all" — yet they never prove that of pagans who never heard Christ's name or Gospel light, nor of their infants dying unbaptized (never mind the rest). Augustine says plainly many are damned who could not be justified and saved (On Nature and Grace 8–9).
Latin
Porro, qui Deo tribuunt hanc voluntatem beneplaciti circa omnium salutem, id inde colligunt, quod omnibus det sufficientia auxilia ad salutem obtinendam: quod tamen nec de Paganis, quibus Christi nomen & Evangelii lumen nunquam innotuit, nec de infantibus illorum qui absque baptismo moriuntur, (ut de aliis nihil dicam) unquam probabunt. Augustinus diserte docet, damnari multos qui justificari & salvari non potuerint, De Nat. & grat. cap. 8. & 9.