Al-Razi was born in Ray, Iran, and died in Herat, Afghanistan. He left a very rich corpus of philosophical and theological works that reveals influence from the works of Avicenna, Abu'l-Barakāt al-Baghdādī and al-Ghazali. Two of his works titled Mabāhith al-mashriqiyya fī 'ilm al-ilāhiyyāt wa-'l-tabi'iyyāt المباحث المشرقية في علم الإلهيات و الطبيعيات (Eastern Studies in Metaphysics and Physics) and al-Matālib al-'Aliya المطالب العالية (The Higher Issues) are usually regarded as his most important philosophical works.