 The main activity of the reasoning faculty is to enquire and to learn. Avempace introduces here the discursive faculty (al-quwwa al-mufakkira) which binds subject and predicate. The text is confusing and the Oxford manuscript ends inconclusively. The Berlin-Krakow manuscript has a few more pages (176rº–179rº) that Joaquín Lomba included in his Spanish translation, as well as Wirmer in his German (IB-S-Wirmer, 720–727). At the end of the fragment, the unknown editor writes that Avempace’s discourse on the soul is followed by a treatise on the intellect, i.e., the Epistle of Conjunction of it with man.