This article addresses several recurring questions regarding the study of the history of political thought. it does so through theoretical exploration and practical application. First, conceptual history, a recent sympathetic alternative to the "Cambridge School" of Quentin Skinner, J, G. A. Pocock, and others, is drawn on in order to outline a general theory of the actual conditions and processes through which politically significant conceptual transformation takes place. Second, by examining concrete examples-especially that of James Rivington, an early American newspaper publisher and Tory leader-the study focuses on the role of contradictions and contextual shifts to suggest how we might begin to better understand the interrelationships between an author, a wide variety of contexts, and the causal force of these contexts.