Abstract
This paper is going to re-read Imam Mohammad al-Ghazali’s moral ideas in order to find the responses to the questions of moral psychology. Al-Ghazali, following the Greek and Islamic philosophers, relates each virtue or vice to a particular faculty in man’s soul. Moreover, following the Asharites, he considers the basis of moral good and badness to be religious. Furthermore, having mentioned al-Ghazali and Hume’s opinions as well as their similarities, this writing explains why al-Ghazali’s view on the moral motivation has not encountered Hume’s objections. And finally, it presents the differences between al-Ghazali and the Greek philosophers’ views on virtues and vices as well as evaluates al-Ghazali’s psychological opinions in ethics.