Etiology, on the other hand, teaches us that, according to the law of cause and effect, this particular condition of matter brings about that other particular condition, and thus it has explained it and performed its part.
-Aitzitik, aitiologiak irakasten digu, kausa eta efektu legearen arabera, materiaren egoera determinatu honek beste hura dakarrela eta horrekin azaldu eta bere egitekoa bete egin duela.