This book is an exercise in rehabilitation. Many writers from ancient times to the present day have seriously undervalued Cicero’s consistency and effectiveness as a politician. Too often tactical suppleness has been judged to be indecisiveness. His perspective was narrower and less imaginative than that of Julius Caesar, but Cicero had clear aims and very nearly realized them. He was unlucky, a defect for which history has no mercy but for which historians are entitled to offer a discount.