To the assertion that thought is a modification of matter we may always, with equal right, oppose the contrary assertion that all matter is merely the modification of the knowing subject, as its idea.
-Ezagutzea materiaren modifikazioa delako baieztapenari beti eskubide berarekin alderantzizkoa kontrajartzen zaio, materia oro subjektuaren ezagutzearen modifikazio bakarrik dela haren errepresentazio gisa.