[ULPIANUS libro octauo decimo ad legem Iuliam et Papiam. ] §22.6.6.prNec supina ignorantia ferenda est factum ignorantis, ut nec scrupulosa inquisitio exigenda: scientia enim hoc modo aestimanda est, ut nec neglegentia crassa aut nimia securitas satis expedita sit neque delatoria curiositas exigatur.
[ULPIANUS, in his eighteenth book on the Julian and Papian Law.] Neither is supine ignorance to be tolerated in one who is ignorant of a fact, nor is meticulous inquiry to be demanded; for knowledge is to be evaluated in such a way that neither gross negligence nor excessive carelessness is sufficiently excused, nor is the curiosity of an informer required.