Abu Hamid al-Ghazali is a towering figure in Islam. His enormous influence can be summarized, in the words of Annemarie Shimmel, as the one who “teaches… only to help man to live a life in accordance with the sacred law, not by clinging exclusively to its letter, but by an understanding of its deeper meaning …so that he is ready for the meeting with his Lord at any moment.” His greatest work Ihya Ulum al-Din (Revivification of the Sciences of Religion), comprising forty books divided into four quarters of ten books each, has helped generations towards this end until today.