This book examined the evolution of Muhammad Baqir al-Sadr’s ideas with careful attention to change and continuity with normative Shi‘i conceptions of political and religious authority, doctrine, and practice. It analyzed his reformulation of Islam’s place in Middle Eastern modernities by investigating discursive themes, issues, and features with reference to the broader Arab regional context and cultural currents, twentieth-century Iraqi experiences, Shi‘i Iraqi encounters with the state, and the Najafi milieu in which Sadr operated. The study traced the central intellectual traditions, relevant discourses, and political, social, and economic contexts that shaped Sadr’s intellectual activity. It thereby identified the interactions between contextual and discursive influences that explain the very change and continuity between his project and established Shi‘i religious norms. It located Sadr’s efforts and achievements within the broader realm of not only Shi‘i but also Arab, Sunni, modernist, and Islamic thought and explored the predominant force of Marxist ideology and communist politics in his articulation of an Islamic program. These hitherto understudied factors helped fashion his conceptualization of modernity and modernization and contributed to his endeavor to reform essential Shi‘i doctrines and praxis.

This chapter examines Sadr’s Falsafatuna and Iqtisaduna as seminal Islamic responses to the ideological and philosophical upheavals of mid-twentieth-century Iraq. Against the backdrop of the radical political transformations that culminated in the 1958 July Revolution and the subsequent contest over Iraq’s national identity – between Pan-Arab and territorial nationalists, communists, and Islamists – Sadr sought to articulate a civilizational project rooted in Islamic metaphysics, social ethics, and epistemology. Through a rigorous critique of Marxist materialism, Western empiricism, and behavioral psychology, he constructs a modern Islamic philosophy grounded in rationalist epistemology and natural theology. Engaging with Sunni revivalist thought, Arab existentialism, and emerging discourses in psychology and economics, Sadr formulated elements of an Islamic moral economy and philosophical paradigm that confronted the ideological pluralism of his time. His work repositions metaphysics within the intellectual struggle for decolonization and articulates a modern Islamic worldview aimed at promoting theism, spiritual renewal, and social justice.

This chapter revisits Sadr’s production from the mid-1970s until his execution in 1980, analyzing two overlooked texts – Manabi‘ al-Qudra fi al-Dawla al-Islamiyya and Al-Madrasa al-Qur’aniyya – that challenge portrayals of Sadr as an unequivocal supporter of Khomeini and Wilayat al-Faqih. These writings reflect Sadr’s engagement with Arab Leftist thought and Marxist determinism, as well as his commitment to developing a political theology centered on human agency. In contrast to Khomeini’s model of absolute clerical guardianship, Sadr advanced a participatory theory of Islamic government. His writings articulated the cultural and civilizational aims of Islamic governance. Notably, Sadralso staged a rare intervention on veiling and gender norms, marking a striking but forgotten episode. The chapter situates Sadr’s thought within ideological currents of the 1970s, including intra-Shi‘i debates in Iraq, the emergence of the Islamic Left, and evolving conceptions of turath (heritage). It argues that Sadr’s vision represented a distinctive alternative to both leftist models and clerical authoritarianism: a Shi‘i Islamic framework for cultural renewal, moral agency, and constitutionalism. By theorizing an Islamic notion of free will and social contract, Sadr carved out a critical space within post-1967 Arab political thought – one that remains vital to rethinking modern Islamic political thought.

In one of the most macabre scenes of modern Iraqi history, just moments before Saddam Husayn’s execution on December 30, 2006, spectators chanted and jeered in the death chamber. Saddam mocked the crowd’s chants for Muqtada Sadr: “Is this the bravery of the Arabs?” The crowd retorted, “Long live Muhammad Baqir al-Sadr!” The viral shaky cell-phone footage of this spectacle captured onlookers celebrating the meting out of what they viewed as poetic justice. For, when challenged, the crowd deployed the powerful memory of the martyrdom of Ayatollah Muhammad Baqir al-Sadr – the Shi‘i cleric and Iraqi intellectual executed at the hands of the Ba’th regime on April 9, 1980. Hours after Saddam met the same fate he had inflicted on Sadr in the aftermath of Iran’s Islamic Revolution, Iraq’s national security adviser Muwaffaq al-Rubay‘i appeared on national television to hail a new era for Iraq, He proclaimed: “This dark page has been turned over … Saddam is gone. Today Iraq is an Iraq for all the Iraqis, and all the Iraqis are looking forward.”1 Since 2003, as Iraqis have negotiated what an Iraq for all Iraqis means, many political and social actors have called upon the thought, activism, and martyrdom of Sadr; the difficulty being that his rich oeuvre and symbolism offer a reservoir of meaning and paths forward.

In mid-twentieth-century Iraq, with the British installed Hashemite monarchy in 1921, many Shi‘i communities experienced exclusion from the state. As ideological politics intensified, disenfranchized Shi‘i communities – notably in the shrine city of Najaf – were drawn to Marxism and communism as vehicles of social justice and empowerment. Shi‘i intellectuals of this period absorbed Western philosophical and socialist ideas, fueling new debates on religion and society. A young Muhammad Baqir al-Sadr began engaging with Marxist thought as he formulated a Shi‘i response to contemporary injustices. In his early treatise, Fadak fi al-Tarikh (1955), Sadr reinterpreted the Fadak inheritance dispute of early Islamic history as an overtly political and revolutionary struggle. Adopting Marxist-influenced language and a historical materialist lens, he analyzed the episode’s underlying power dynamics and socio-economic stakes, arguing that Fatima al-Zahra’s challenge to the first caliph constituted revolutionary action against unjust authority. Sadr transformed Fatima into a symbol of resistance – a model for revolutionary Shi‘i political engagement in the modern era. Sadr’s initial flirtation with Marxist concepts catalyzed a new Shi‘i intellectual current that fused class-conscious social critique with Islamic theological principles, laying the groundwork for an indigenous Shi‘i paradigm of political activism.

This chapter offers a contextual and thematic analysis of Muhammad Baqir al-Sadr’s intellectual production from 1964 to 1972, a period of political, cultural, and ideological upheaval in Iraq and the broader Arab world. It explores how Sadr’s thought evolved in response to the collapse of Arab nationalism, the rise of Ba‘thist authoritarianism, and the ongoing influence of leftist ideologies. The chapter situates his writings – such as the new preface to Iqtisaduna, Al-Insan al-Mu‘asir wa al-Mushkila al-Ijtima‘iyya, and Ahl al-Bayt – within the complex interplay of Iraqi Shi‘i mobilization, epistemological debates on empiricism, and efforts to forge a modern Islamic identity. It shows how Sadr redefined central Shi‘i doctrines like infallibility (‘isma) in a rationalist and activist direction, often using Marxist terminology and framing to make Islamic arguments. Through his engagement with Western philosophical methods in logical positivism and inductive reasoning, Sadr advanced an Islamic framework for modernization and economic development. The chapter underscores his strategic caution amid rising tensions with the Iraqi regime and within the Shi‘i clerical establishment, especially after Khomeini’s arrival in Najaf. This period reveals the breadth of Sadr’s discursive engagement, his reformist vision, and his ongoing struggle to harmonize Islamic theology with contemporary intellectual and political challenges.

This chapter explores the contested legacy of Muhammad Baqir al-Sadr in Iraqi and regional politics from 1980 to the present. Through four thematic sections, it examines how Sadr’s martyrdom and ideas – especially on authority, khilafa, and popular sovereignty – have been appropriated by competing Shi‘i actors, particularly after 2003. The chapter traces post-2003 struggles over national commemoration, the tension between Iraqi and Iranian narratives of the Iran–Iraq War, and the mobilization of Sadr’s legacy by actors like the Da‘wa Party, SCIRI, Muqtada al-Sadr, and Muhammad Baqir al-Sadr’s son, Ja‘far al-Sadr. Finally, it situates Sadr in post-2011 debates on civil state, pluralism, sectarianism, and anti-sectarianism, and examines his reception among various Islamist movements, the Islamic Left beyond Iraq.

Persian was not the only language transformed by the demographic upheaval consequent to the formation of the Persian Empire. Other languages of the Iranic family, particularly Parthian and Bactrian, were reduced in ways quite similar to Middle Persian. Although we lack texts in those two languages contemporary with the Achaemenian Empire, this chapter argues that their uncanny similarity with Middle Persian in grammatical restructuring was due to similar demographic conditions and probably also by convergence through multilingualism. Counterexamples of Iranic languages later documented on the fringes of or outside of the former Persian Empire show that they were not affected by the same changes. The conditions prevailing in the Persian Empire were likely responsible for the similarity in type shared by Middle Persian, Parthian, and Bactrian.