A rational being cannot regard his maxims as practical universal laws, unless he conceives them as principles which determine the will, not by their matter, but by their form only.
Zerizan arrazoidun batek norberaren maximak lege praktiko orokor gisa pentsatu behar baditu, orduan haiek nahimenaren determinazio-oinarria formaren arabera jasotzen duten printzipio gisa baino ezin ditu pentsatu, ez materiaren arabera.