Hadi Sabzavari () or Hajj Molla Hadi Sabzavari (1797–1873 CE / 1212 - 1289 AH) was an Iranian philosopher, mystic theologian and poet. Historical background Molla Hadi lived in the Qajar period. According to his description, this period was along with descend of Hikmah; he also complained of his period for the sake of lacking knowledge and philosophy. This kind of thinking was common among Islamic philosophers. There was an intellectual and spiritual turmoil in the Qajar period. In fact, in this period, Iranian encountered with new European thought and revival of traditional thinking; also in this period we can see the diverse developments in beliefs like Shaykhism, Babism and Bahá'í and at the same time weakness and disappearance of Shiite. Molla Hadi is counted as one of the four prominent masters of the Tehran philosophical school, along with Aqa ‘Ali Mudarris, Aqa Muhammad Riza Qumshihi, Mirza Abul Hasan Jelveh. Life He was born in Sabzevar, Iran to a family of land-owning merchants. His formal education started at a young age under his cousin, Molla Hosayn Sabzavari, and he wrote a small treatise at the age of seven. His father died when he was seven or eight years old and his uncle Molla Ḥosayn Sabzavari, became his caretaker. When he reached the age of ten, he was taken by his cousin to Mashhad. There, he resided in the Hajj Hasan madrasa near the mausoleum of Imam Reza, where he studied Arabic, Islamic Jurisprudence, logic, and the principles of religion and law with Molla Hosay for a period of ten years. When he turned twenty, he returned to his hometown of Sabzavar. From there, he prepared his plans for the Hajj and set out in the direction of Isfahan. During this period, Isfahan was an important intellectual center of Iran, where philosophy and intellectual mysticism ('Erfan) flourished. Among the important masters of these tradition at the time, the names of Mollā ʿAli Nuri (died 1830–31) and Mollā Esmāʿil Eṣfahāni, a student of Nuri, were prominent. They taught Islamic philosophy, mostly of Sadr al-Din Shirazi and his school. He remained in Isfahan for around eight or nine years, where he studied under these two undisputed masters of Mulla Sadra's school of philosophy. He concentrated on the main works of Mulla Sadra, such as the Asfar and Al-Shawahed al-Robubiya. Simultaneously, he also studied Islamic jurisprudence with Aqa Mohammad 'Ali Najafi, one of the