Hence the class of abstract ideas is in this respect distinguished from other classes; in the latter the principle of sufficient reason always demands merely a relation to another idea of the same class, but in the case of abstract ideas, it at last demands a relation to an idea of another class.
Horregatik dauka errepresentazio abstraktuen klaseak besteekiko desberdingarritzat horietan arrazoiaren printzipioak beti harreman bat klase bereko beste errepresentazio batekiko eskatzea, baina errepresentazio absktratuetan azkenik harreman bat beste klase bateko errepresentazio batekiko.