Sixteenth-century jurist, Thomas More, developed the distinction between a Christian utopia and the political autonomy of the state. Chapter 4 recognises religion’s role in contributing to cosmopolitan ethical principles to guide political power, without becoming a justification for a political theology of the state. Section 4.1 proceeds with More’s emphasis of a common humanism that brought accommodation between temporal and spiritual sovereignty. Section 4.2 ascertains in what manner the Second Vatican Council recognised that not alone freedom but the search for the truth is central to political democracy and an open public sphere. Catholic theorists recognise a prisca theologia or a semblance of the natural law, and thereby advance in what way the expression of the political form the state takes as a basis for a common cosmopolitan humanism. Section 4.3 details Maritain’s proposed model of Church and state, and delineates Maritain’s theory of secular democratic faith, as a bridging of Catholicism with liberal democracy and human rights. This chapter concludes by enquiring if a secular democratic faith in democracy and human rights is possible today.