Questio de aqua et terra (61)

(61) Cum igitur innata sit nobis via investigande veritatis circa naturalia ex notioribus nobis, nature vero minus notis, in certiora nature et notiora, ut patet ex primo Phisicorum, et notiores sint nobis in talibus effectus quam cause, -- quia per ipsos inducimur in cognitionem causarum, ut patet, quia eclipsis solis duxit in cognitionem interpositionis lune, unde propter admirari cepere phylosophari --, viam inquisitionis in naturalibus oportet esse ab effectibus ad causas. (61) Since, then, it is our inborn method of investigating the truth as to nature to proceed from what is better known to us but less known to nature, to what is more certain and better known to nature, as is clear from the first Physicorum, and in such matters effects are better known to us than causes, for it is by them that we are led to the knowledge of causes, as is manifest (for it was the eclipse of the sun that led to the recognition of the interposition of the moon; so that men began to philosophise because of their wonder), the path of investigation in the things of nature must needs be from effects to causes;