The essays selected here for translation derive largely from Thomasius's work on Staatskirchenrecht, or the political jurisprudence of church law. These works, originating as disputations, theses, and pamphlets, were direct interventions in the unresolved issue of the political role of religion in Brandenburg-Prussia, a state in which a Calvinist dynasty ruled over a largely Lutheran population and nobility as well as a significant Catholic minority. In mandating limited religious toleration within the German states, the provisions of the Peace of Westphalia (1648) also provided the rulers of Brandenburg-Prussia with a way of keeping the powerful Lutheran church in check by guaranteeing a degree of religious freedom to non-Lutherans and thereby detaching the state from the most powerful territorial church. Thomasius's writings on church-state relations, many of them critical of the civil claims made by Lutheran theologians, are a direct response to this state of affairs. At the same time, owing to the depth of intellectual resources at his disposal, these works constitute a major contribution to the broader discussion of the relation between the religious and political spheres.

During the middle decades of the nineteenth century the English Nonconformist community developed a coherent political philosophy of its own, of which a central tenet was the principle of religious equality (in contrast to the stereotype of Evangelical Dissenters). The Dissenting community fought for the civil rights of Roman Catholics, non-Christians, and even atheists, on an issue of principle that had its flowering in the enthusiastic and undivided support that Nonconformity gave to the campaign for Jewish emancipation. This study examines the political efforts and ideas of English Nonconformists during the period, covering the whole range of national issues raised, from state education to the Crimean War. It offers a case study of a theologically conservative group defending religious pluralism in the civic sphere, showing the that concept of religious equality was a grand vision at the center of the political philosophy of the Dissenters.