If the cause be known only by the effect, we never ought to ascribe to it any qualities, beyond what are precisely requisite to produce the effect: Nor can we, by any rules of just reasoning, return back from the cause, and infer other effects from it, beyond those by which alone it is known to us.
Efektuagatik bakarrik badazagugu kausa, ezin diogu inoiz iratxeki kualitaterik efektu hori eragiteko doi-doi behar direnak baino gehiagorik, ezta ere kausara itzuli eta ezelako arrazoiketa zuzenaren arauen izenean beste efektu batzuk inferitu hartatik, bera ezagun dagiguten bakar horiez gain.