Allegiance in Church and State (1928) examines the evolution of ideas and ideals, their relation to political and economic events, and their influence on friends and foes in seventeenth-century England – which witnessed the beginning of both the constitutional and the intellectual transition from the old order to the new. It takes a careful look at the religious and particularly political ideas of the Nonjurors, a sect that argued for the moral foundations of a State and the sacredness of moral obligations in public life.
