 Priority in precedence “is of great avail for the conceptualization , for the assent, and for the easiness to keep that which one conceptualizes and that to which one gives assent” (IB-taaliq: 69). Priority in cause means that essential things precede other essential things and the concept has to abide by this priority. Priority in excellence means that essential is more excellent than accidental and the concept has to show it. Priority in cause and in excellence are “degrees” that are applied to the matching concepts in the soul. The benefit of priority and posteriority regarding the cause and the perfection, or excellence, results from the fact that