Fārābī, the founder of Islamic philosophy, devoted a significant portion of his practical wisdom to political governance. His pioneering role and the breadth of his works on political governance have reinforced the prevailing view that all post-Fārābīan Islamic philosophers—including Khwājah Naṣīr al-Dīn al-Ṭūsī—merely reiterated the ideas presented in The Virtuous City (Ārāʾ ahl al-madīna al-fāḍila) without contributing any novel insights. This article employs a documentary method alongside interpretive analysis to examine the views of Fārābī and al-Ṭūsī on three key dimensions of political governance: ontology, epistemology, and policymaking. It seeks to explicate al-Ṭūsī's contributions beyond what Fārābī had previously articulated. With respect to the ontology of the city, although al-Ṭūsī acknowledges the complexity of society as recognized by Fārābī, he does not affirm its real existence. In the epistemology of social phenomena, he rejects methodological reductionism, advancing a perspective aligned with the theory of social emergence. In matters of policymaking, while affirming Fārābī's conception of volitional order in the city, he elaborates on the laws of justice, presenting justice as the distinguishing feature of the virtuous city vis-à-vis non-virtuous cities, and reformulates the classification of non-virtuous cities on the basis of the criterion of rational discourse (nuṭq).