Al-Ghazali's Path to Sufism: His Deliverance from Error (al-Munqidh min al-Dalal) and Five Key Texts
Imam Abu Hamid al-Ghazaliis generally acclaimed as the most influential thinker of medieval Islam; his writings have been regarded as the greatest in spirituality and have been, for centuries, the most read work after the Qur'an in the Muslim world.