The political career of Marcus Tullius Cicero began in 75 BC with his election to the office of quaestor, and ended in 43 BC, when he was assassinated upon the orders of Mark Antony. Cicero, a Roman statesman, lawyer, political theorist, philosopher, and Roman constitutionalist, reached the height of Roman power, the Consulship, and played a critical role in the transformation of the Roman Republic into the Roman Empire. A contemporary of Julius Caesar, Cicero is widely considered one of Rome's greatest orators and prose stylists.