It was possible to effect this verification of moral principles as principles of a pure reason quite well, and with sufficient certainty, by a single appeal to the judgement of common sense, for this reason, that anything empirical which might slip into our maxims as a determining principle of the will can be detected at once by the feeling of pleasure or pain which necessarily attaches to it as exciting desire; whereas pure practical reason positively refuses to admit this feeling into its principle as a condition.
Baina printzipio moralen legeztapen hori, arrazoimen huts baten oinarrizko esakune gisa, ongi eta segurtasun nahikoz egin zitekeen giza adimen arruntaren judiziora joz, zeren nahimenaren determinazio-oinarri gisa gure maximetan ezkutuan sartuko litzatekeen eduki enpiriko oro berehala ezagutarazten baitu plazeraren eta minaren sentimenduaren bidez, zeintzuek irrika sortzen duten heinean hari itsasten zaizkion, baina arrazoimen praktiko huts hark aurre egiten diola hura bere printzipioan baldintza gisa onartzeari.