332. Uses for perfecting the rational are all things that give instruction about the subjects above mentioned, and are called sciences and branches of study, pertaining to natural, economical, civil and moral affairs, which are learned either from parents and teachers, or from books, or from interaction with others, or by reflection on these subjects by oneself. These things perfect the rational so far as they are uses in a higher degree, and they are permanent as far as they are applied to life. Space forbids the enumeration of these uses, by reason both of their multitude and of their varied relation to the common good.
