An Islamic perspective of psychology of religion : an analysis of Abu Hamid Al-Ghazali's Ihya' 'Ulum al-Din (3rd quarter: book 1) and that of Sigmund Freud's the Future of an Illusion and Carl Gustav Jung's Psychology and Religion - Azhani binti Ahmad (Kulliyyah of Islamic Revealed Knowledge and Human Sciences, International Islamic University Malaysia, 2003)