That other objects, considered merely as ideas, are like his body, that is, like it, fill space (which itself can only be present as idea), and also, like it, are causally active in space, is indeed demonstrably certain from the law of causality which is a priori valid for ideas, and which admits of no effect without a cause;
d. horrek bezala espazioa (errepresentazio gisa bakarrik existitzea ahalgarri zaio) espazioa betetzen dutela eta horrek bezala espazioan eragiten dutela, hori zinez a priori frogagarria da ziur errepresentazioentzako kausalitatearen lege segurutik, zeinek ez baitu kausarik gabeko efekturik onartzen: