Every force and law of nature, every example of such forces and laws, must first be immediately known by the understanding, must be apprehended through perception before it can pass into abstract consciousness for reason.
Natur indar oro eta natur lege [oro], horiek agertzen dituen kasu oro, lehenik adimenak bitartegabe ezagutu behar du, begiespenez atzeman behar du, in abstracto arrazoimenarentzat kontzientzia erreflexionatuan sartu baino lehen.