This book completes the study of the life and political thought of Algernon Sidney (1623-1688), which began with Algernon Sidney and the English Republic, 1623-1677 (1988). In the process it offers a reinterpretation of the major political crisis of Charles II's reign, and of its European and seventeenth-century contexts. Like its predecessor, the book spans the disciplines of intellectual and political history. Its twin focus is the last six years of Sidney's life, which culminated in the famous public drama of his trial and execution for treason in 1683, and in his major political work, the Discourses Concerning Government, which was used as evidence against him at the trial. This intertwining of events and ideas calls for an examination of the relationship between the practical and intellectual aspects of the crisis of 1678-1683 in general.

In the century following his execution for treason in 1683, Algernon Sidney became one of the most widely influential political writers - in both Europe and America - that England had ever produced. This is the first full-scale study of Sidney for more than a century, and the first ever study of his political thought. The book describes Sidney's republican political ideas and their later impact. It sets them in their ideological context, in relation both to their sources and to the ideas of contemporaries, including Milton, Harrington, Vane, and Locke. It then asks: how did this ideology develop, and why? The answer involves a series of investigations: of Sidney's family background; of the nature of his personal life and family relationships; and of his public political career. On this latter score we follow Sidney's progress from parliamentarian soldier in the English Civil War, to senior member and ambassador of the English Republic, to embittered exile after the Restoration in 1660.