This monograph explores Marcus Tullius Cicero's awareness and interpretation of contemporary political events as reflected in his private correspondence during the last years of both the Roman republic and his own life. Cicero's correspondence gives a detailed view of current political events in Rome and constitutes, together with Caesar's writings, our major contemporary evidence for the circumstances of the civil war of 49 BC. The theoretical input of Cicero's predecessors, their perceptions of constitutional development (in particular of Roman politics) as well as Cicero's perception of their political theories are scrutinized to determine the extent of Cicero's awareness of a larger pattern of political events.