|
|
| (60) Propter causam vero efficientem investigandam, prenotandum est quod tractatus presens non est extra materiam naturalem, quia inter ens mobile, scilicet aquam et terram, que sunt corpora naturalia; et propter hec querenda est certitudo secundum materiam naturalem, que est hic materia subiecta; nam circa unumquodque genus in tantum certitudo querenda est, in quantum natura rei recipit, ut patet ex primo Ethicorum. | (60) But for the investigation of the efficient cause we must note in advance that the present treatise does not go beyond the scope of nature, for it is confined to mobile existence, to wit water and earth, which are natural bodies; and therefore we are to look for such certainty as is consonant with natural order, which is here our subject-matter; for concerning every kind of thing we are to seek the degree of certainty of which the nature of the thing is capable, as is clear from the first Ethicorum. |