In the summum bonum which is practical for us, i.e., to be realized by our will, virtue and happiness are thought as necessarily combined, so that the one cannot be assumed by pure practical reason without the other also being attached to it.
Guretzat praktikoa den, hau da, gure nahimenaren bidez egin daitekeen ongi gorenean bertutea eta zoriona halabeharrez lotuta pentsatzen dira, halako moldez non bata arrazoimen praktiko hutsak ezin baitu onartu hark bestea ere eduki gabe.