4 June 1928. He attended Hayat Elementary School in Qom where he attended seminary classes informally; he started his official seminary education in 1941. His teachers considered him a "quick learner and remarkably knowledgeable for his young age". After a while he started teaching other students "lower-level" courses. This coincided with the "liberalizing of Iranian politics", the political climate of his time was secular, so that most religious scholars "felt politically and socially marginalized". To have some influence in the "national life" he concluded that he had to become familiar with "modern science and contemporary world". As a result, he started a "full secular education" alongside his seminary studies. He moved to Tehran, where he completed a degree in Islamic jurisprudence (fiqh) and political sciences from Tehran University and learned some English and French. He then returned to Qom to study theology and Islamic philosophy under Allamah Muhammad Husayn Tabatabai. In Iraq Following the death of his father in 1953, he left Qom for Najaf to study theology under Ayatollah Muhsin al-Hakim and Abul Qasim Khui. There he had teachers such as: Ayatollah Hakim, Shaykh Morteza al Yasin, Ayatollah Abulqasim Khu'i, Shaykh Hossein Hilli, Shaykh Sadra Badkubahi, and others, some of whom became Marja after Ayatollah Borujerdi's death. Musa al-Sadr became a mujtahid in Najaf. In 1955 he traveled to Lebanon where he met Abd al-Hossein Sharafeddin. He had met him previously in 1936 when his family had hosted Abd al-Husayn in Iran. The same year he left Iran and returned to Najaf and, in the autumn of 1956, he married the daughter of Ayatollah Azizollah Khalili. Return to Iran After the 1958 Iraqi coup d'état and the overthrow of the monarchy in Iraq, Sadr returned to Iran. There, he accepted the request of Ali Davani, who was sent by Ayatollah Shariatmadari, and became an editor of Darsha'i az maktab-e Islam, also known as Maktab-e Eslam, a journal published by the Hawza of Qom and endorsed by Ayatollah Broujerdi. He began contributing with the third issue, focusing on Islamic economics, "a novel subject at the time". His articles in this field were then published as a book. He soon became the journal's "de facto editor-in-chief". He left the journal in December 1959 along with some of its original founders. Musa Sadr also took part in devising a new scheme for Hawza called the "Preliminary plan for reforming the Hawza" (),