Therefore the notion of a cause is fictitious and delusive and, to speak in the mildest way, is an illusion, only excusable inasmuch as the custom (a subjective necessity) of perceiving certain things, or their attributes as often associated in existence along with or in succession to one another, is insensibly taken for an objective necessity of supposing such a connection in the objects themselves; and thus the notion of a cause has been acquired surreptitiously and not legitimately;
Baina ezinezkoa da, esaten du Humek, gauza baten eta beste gauza baten (edo determinazio baten eta erabat ezberdina den beste batenaren) arteko lotura, hautemapenean ematen ez badira, a priori eta beharrezko gisa ezagutzea.