[6][7][8] He wrote various works in the fields of medicine, chemistry, physics, astronomy, cosmology, literature, theology, ontology, philosophy, history and jurisprudence.
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.
[13] Fakhr al-Din al-Razi, whose full name was Abū ʿAbd Allāh Muḥammad ibn ʿUmar ibn al-Ḥusayn (Arabic: أبو عبد الله محمد بن عمر بن الحسين), was born in 1149 or 1150 CE (543 or 544 AH) in Ray (close to modern Tehran), whence his nisba al-Razi.
[14] Either his great-grandfather or his grandfather migrated from Mecca to Tabaristan (a mountainous region located on the Caspian coast of northern Iran) in the 11th century, and some time after that the family settled in Ray.
His commentary on the Quran was the most-varied and many-sided of all extant works of the kind, comprising most of the material of importance that had previously appeared.
[19] One of Imam Razi's outstanding achievements was his unique interpretive work on the Quran called Mafātiḥ al-Ghayb (Keys to the Unseen) and later nicknamed Tafsīr al-Kabīr (The Great Commentary), one reason being that it was 32 volumes in length.
Al-Razi's rationalism undoubtedly "holds an important place in the debate in the Islamic tradition on the harmonization of reason and revelation.
The most important instance showing the synthesis of Razi's thought may be the problem of the eternity of the world and its relation to God.
His major works include: Note: Not to be confused with the book of Tafsir by Imam Nasir al-Din al-Baydawi Qadi Baydawi called: Anwaar at-Tanzeel wa Asraar at-Ta'weel (The Lights of Revelation and The Secrets of Interpretation) or more commonly Tafsir al-Baydawi