It is clear that the knowledge of cause and effect, as the universal form of understanding, belongs to all animals a priori, because to them as to us it is the prior condition of all perception of the outer world.
Kausa eta efektuen ezagutza adimen-forma orokor gisa a priori animaliengan badagoela, aski ziur gelditzen da jadanik haientzat ere guretzat bezala kanpo-munduaren ezagutza begiesgarri ororen aurretiazko baldintza izatetik: