Mulla Sadra (ca. 1572–1640) is one of the most prominent figures of post-Avicennan Islamic philosophy and among the most important philosophers of Safavid Persia. He was a prolific writer whose work advanced the fields of intellectual and religious science in Islamic philosophy, but arguably his most important contribution to Islamic philosophy is in the study of existence ( wujud ) and its application to such areas as cosmology, epistemology, psychology, and eschatology. Sadra represents a paradigm shift from the Aristotelian metaphysics of fixed substances, which had dominated Islamic philosophy, to an analysis of existence as the ultimate ground and dynamic source of things. He posits that all beings derive their reality and truth from their wujud and that a proper philosophical analysis must therefore start and eventually end with it. The present work’s focus on Sadra’s gradational ontology provides a strong foundation for the reader to understand Sadra’s other works and later texts by other philosophers working in the same field. This edition contains parallel English-Arabic texts and a new translation by preeminent scholar of Islamic philosophy Seyyed Hossein Nasr.
Ṣadr ad-Dīn Muḥammad Shīrāzī, also called Mulla Sadrā (Persian: ملا صدرا; also spelt Molla Sadra, Mollasadra or Sadr-ol-Mote'allehin; Arabic: صدرالمتألهین) (c. 1572–1635), was an Iranian Shia Islamic philosopher, theologian and ‘Ālim who led the Iranian cultural renaissance in the 17th century. According to Oliver Leaman, Mulla Sadra is arguably the single most important and influential philosopher in the Muslim world in the last four hundred years.
Though not its founder, he is considered the master of the Illuminationist (or, Ishraghi or Ishraqi) school of Philosophy, a seminal figure who synthesized the many tracts of the Islamic Golden Age philosophies into what he called the Transcendent Theosophy or al-hikmah al-muta’liyah.
Mulla Sadra brought "a new philosophical insight in dealing with the nature of reality" and created "a major transition from essentialism to existentialism" in Islamic philosophy, although his existentialism should not be too readily compared to Western existentialism. His was a question of existentialist cosmology as it pertained to Allah, and thus differs considerably from the individual, moral, and/or social, questions at the heart of Russian, French, German, or American Existentialism.
Mulla Sadra's philosophy ambitiously synthesized Avicennism, Shahab al-Din Suhrawardi's Illuminationist philosophy, Ibn Arabi's Sufi metaphysics, and the theology of the Ash'ari school and Twelvers.
his main work is The Transcendent theosophy in the Four Journeys of the intellect, or simply Four Journeys.