This is the biography of Mirza Hassan Khan Mostowfi ol-Mamalek, a prominent Iranian statesman who served as Prime Minister six times during the tumultuous early 20th century. The reader explores Mostowfi ol-Mamalek's life and career, highlighting his commitment to constitutionalism, education, and cultural preservation and his efforts to balance tradition with modernity. It also explores his leadership challenges during internal strife, foreign interference, and political instability. Finally, the text underscores his legacy as a figure of integrity and compassion who prioritised national welfare over personal ambition.