This book tries to shed light upon one of those stars that shone in the world of Islam, undertaking a remarkable role during the Thirteenth Hijrah Century; being a dignitary that managed, through his broad dimensions, in abundantly contributing to the Islamic thought and heritage, represented by al-Mirza Abu al-Qasim al-Qummi. He has been one of the renowned men of thought in modern history, having an all-inclusive and versatile character; he was an eminent ‘alim, laboring hard for God’s sake, the very incarnation of piety and asceticism, possessing all humane excellences, and the legend in uprightness and forbearance.