After Cicero had received this power, he committed all affairs outside to Quintus Metellus; but the management of the city he kept in his own hands. Such a numerous attendance guarded him every day when he went abroad that the greater part of the forum was filled with his train when he entered it. Catiline, impatient of further delay, resolved himself to break forth and go to Manlius; but he commanded Marcius and Cethegus to take their swords and go early in the morning to Cicero's gates, as if only intending to salute him, and then to fall upon him and slay him. Anoble lady, Fulvia, coming by night, discovered this to Cicero, bidding him beware of Cethegus and Marcius. They came by break of day, and being denied entrance, made an outcry and disturbance at the gates, which excited all the more suspicion. But Cicero, going forth, summoned the senate into the temple of Jupiter Stator, which stands at the end of the Sacred Street, going up to the Palatine. And when Catiline with others of his party also came, as though intending to make his defence, none of the senators would sit by him, but all of them left the bench where he had placed himself. And when he began to speak, they interrupted him with outcries. At length, Cicero, standing up, commanded him to leave the city; for, since one governed the commonwealth with words, the other with arms, it was necessary that there should be a wall betwixt them. Catiline, therefore, immediately left the town, with three hundred armed men; and assuming, like a magistrate, the rods, axes, and military ensigns, he went to Manlius, and having got together a body of near twenty thousand men, with these he marched to the several cities, endeavoring to persuade or force them to revolt. It being now come to open war, Antonius was sent forth to fight him.
The remainder of those in the city whom he had corrupted, Cornelius Lentulus kept together and encouraged. He had the surname Sura, and was a man of a noble family, but a dissolute liver, who for his debauchery was formerly turned out of the senate, and was now holding the office of praetor for the second time, as the custom is with those who desire to regain the dignity of senator. It is said that he got the surname Sura upon this occasion; being quaestor in the time of Sylla, he had lavished away and consumed a great quantity of the public moneys, at which Sylla, being provoked, called him to give an account in the senate. He appeared with great coolness and contempt, and said he had no account to give, but they might take this, holding up the calf of his leg, as boys do at ball, when they have missed. Upon which he was surnamed Sura, sura being the Roman word for the calf of the leg. Being at another time prosecuted at law, and having bribed some of the judges, he escaped by only two votes, and complained of the needless expense he had gone to in paying for a second, as one would have sufficed to acquit him. This man, such in his own nature, and now inflamed by Catiline, false prophets and fortune-tellers had also corrupted with vain hopes, quoting to him fictitious verses and oracles, and proving from the Sibylline prophecies that there were three of the name Cornelius designed by fate to be monarchs of Rome; two of whom, Cinna and Sylla, had already fulfilled the decree, and that divine fortune was now advancing with the gift of monarchy for the remaining third Cornelius; and that therefore he ought by all means to accept it, and not lose opportunity by delay, as Catiline had done.
Lentulus, therefore, designed no mean or trivial matter, for he had resolved to kill the whole senate, and as many other citizens as he could, to fire the city, and spare nobody, except Pompey's children, intending to seize and keep them as pledges of his reconciliation with Pompey. For there was then a common report that Pompey was on his way homeward from his great expedition. The night appointed for the design was one of the Saturnalia; swords, flax, and sulphur they carried and hid in the house of Cethegus;and providing one hundred men, and dividing the city into as many parts, they had allotted to every one singly his proper place, so that in a moment, many kindling the fire, the city might be in a flame all together. Others were appointed to stop up the aqueducts, and to kill those who should endeavor to carry water to put it out. While these plans were preparing, it happened that there were two ambassadors from the Allobroges staying in Rome; a nation at that time in a distressed condition, and very uneasy under the Roman government. These Lentulus and his party, judging useful instruments to move Gaul to revolt, admitted into the conspiracy, and they gave them letters to their own magistrates, and letters to Catiline; in those they promised liberty, in these they exhorted Catiline to set all slaves free, and to bring them along with him to Rome. They sent also to accompany them to Catiline, one Titus, a native of Croton, who was to carry those letters to him.
These counsels of inconsidering men, who conversed together over their wine, Cicero watched with sober industry and forethought, and with most admirable sagacity, having several emissaries abroad, who observed and traced with him all that was done, and keeping also a secret correspondence with many who pretended to join in the conspiracy. He thus knew all the discourse which passed between them and the strangers; and lying in wait for them by night, he took the Crotonian with his letters, the ambassadors of the Allobroges acting secretly in concert with him.
By break of day, he summoned the senate into the temple of Concord, where he read the letters and examined the informers.