As a leading Muslim thinker, Abd al-Ghan al-N bulus of Damascus creatively engaged with the social, religious, and intellectual challenges that emerged during the early modern period in which he lived. Yet, at a time of high anti-mystical fervour, his Sufi-inspired views faced strong local antipathy. Through extensive correspondence, presented here for the first time, Abd al-Ghan projected his ideas and teachings beyond the parochial boundaries of Damascus, and was thus able to assert his authority at a wider regional level. The letters he himself selected, compiled, and titled shed fresh lights on the religious and intellectual exchanges among scholars in the eastern Ottoman provinces, revealing a dynamic and rigorous image of Islam, one that is profoundly inspired by humility, tolerance, and love.