Extensively trained as a philosopher, Cicero was also a working politician with a keen awareness of the distance between pure intellectual endeavor and effective strategies of persuasion. This volume explores a series of interrelated problems in his works, from the use of emotion, self-correction, and even fiction in intellectual inquiry, to the motives of political agents and the morality of political arguments, to the means of justifying the use of force in international relations. It features close readings of works from all periods of Cicero's philosophical career, from the threshold of Rome's civil war to the year following the assassination of Julius Caesar. For a richer body of evidence, the volume also makes use of material from Cicero's personal letters and political speeches. Power and Persuasion in Cicero's Philosophy will be essential reading not only in Roman philosophy but also for the political and rhetorical culture of the Roman Republic.