and methodological approach for Mulla Sadra. In fact, the metalanguage approach could be considered in latter not the former. List of known works Sharh Usool Al-Kafi شرح اصول الکافي Exegesis of one of the most Important Hadith collection in Shi'a school of thought, Al-Kafi contains Narrations from Twelve Divinely appointed Imams from Household of Prophet Muhammad Hikmat Al Muta'alyahfi-l-asfar al-‘aqliyya al-arba‘a [The Transcendent theosophy in the Four Journeys of the Intellect], a philosophical encyclopedia and a collection of important issues discussed in Islamic philosophy, enriched by the ideas of preceding philosophers, from Pythagoras to those living at the same time with Mulla Sadra, and containing the related responses on the basis of new and strong arguments. In four large volumes; also published several times in nine smaller volumes. He composed this book gradually, starting in about 1015 A.H. (1605 A.D.); its completion took almost 25 years, until some years after 1040 A.H. (1630 A.D.). Book is also translated in Urdu by Indian scholar Abul Ala Maududi by the name of Asfar e Arba. al-Tafsir (A commentary upon the Qur'an) Diwan Shi’r (Collection of Poems), a number of scholarly and mystic poems in Persian. Si Asl, Mulla Sadra's only extant book of philosophy in Persian. Here, by resorting to the main three moral principles, he has dealt with moral and educative subjects related to scientists, and advised his contemporary philosophers. Sharh al-hidayah, a commentary on a book called Hidayah, which had been written on the basis of Peripatetic philosophy. ‘Arshiyyah, also called al-Hikmat al-‘arshiyyah, a referential book about Mulla Sadra's philosophy. As in al-Mazahir, he has tried to demonstrate the Beginning and the End concisely but precisely. This book has been translated by Professor James Winston Morris into English with an informative introduction. al-Mabda‘ wa’l-ma‘ad, also called al-Hikmat al-muta‘aliyyah, considered to be a summary of the second half of Asfar. He called this book the Beginning and the End, since he believed at heart that philosophy means the knowledge of the Origin and the Return. al-Mazahir This book is similar to al-Mabda‘ wa’l-ma‘ad, but is shorter than it. It is, in fact, a handbook for familiarizing readers with Mulla Sadra's philosophy. Huduth al-‘alam, on the issue of the origination of the world, which is a complicated and disputable problem for many philosophers. He proved his solid theory through the theory of the trans-substantial motion. Iksir al-‘arifin, a gnostic and educative book.