In the book De laudibus divinae sapientiae, according to Gilles, two opposite motors are at work in the human soul, sense and reason: the first one leads the man to evil; the second one to good. However Gilles gets the Thomist argument back to warn the reader that man, to reach the knowledge of the eternal truth and his own salvation, needs a third motor, which compensates for the limits of human reason.Therefore the human reason arranges the soul lower powers, (...) while it itself is governed by the Holy Spirits gifts, that form its supernatural habitus. These gifts lead the soul, through an anagogic, gnosiological and moral process, to a gradual conversion to the divine supreme Wisdom.The book under consideration reveals so some important changes in Gilles’ doctrine. We’ll analyze the problem of the human possibility to know and love God, according to Gilles’ theses before and with the Scholastic debates. (shrink)