This is a tale of two Catos, the real-life man and the legend. The difference can be helpfully illuminated through two stories. Our first opens on 5 December 63 BC in Rome at the Temple of Concord where an important meeting of the Senate has been debating the fate of the Catilinarian conspirators.1 Should they face exile or death? Decimus Junius Silanus, the consul-elect for the following year, proposes execution and many others in the Senate agree. But Gaius Julius Caesar, the praetor-elect and new pontifex maximus, steps forth and makes a stirring speech against the death penalty, arguing instead for exile. The Senate is momentarily persuaded, but then something remarkable happens: Marcus Porcius Cato, only thirty-two years old and the tribune-elect, stands up and delivers a passionate, uncompromising speech against Caesar’s motion, articulating the need for decisive action to deter future treason. His speech sways his fellow senators back to a vote for execution of the conspirators. Everyone present takes note, for a new senatorial star is on the rise.