The role played by emotions, feelings, passions and moral sins and vices in human knowledge is a lasting concern of philosophers. Considering the divine knowledge as synonymous with wisdom and taking the self-refinement and self-parification as a necessary background of for divine knowledge, Mulla Sadra holds that the factors preventing the divine knowledge and those preventing the human perfection and wisdom are the same. Accordingly the proximity to sacred world and grasping the divine knowledge depend upon self-disipline and moral purification from guilties and sins like avidity, pride, egoism, back bite, ambition, hostility, drinking wine, lying … and depend upon commitment to sharia (divine law).