If the cause, assigned for any effect, be not sufficient to produce it, we must either reject that cause, or add to it such qualities as will give it a just proportion to the effect.
Efektu bati egotziriko kausa hura eragiteko behar bestekoa ez bada, kausa hori ezetzi beharrean aurkitzen gara, edota efektuarekiko proportzio justua damaioten kualitateak erantsi beharrean.