In Catilinam

And since all this has been displayed in the senate, and made manifest, and detected by me, I will now explain it briefly, that you, O citizens, that are as yet ignorant of it, and are in suspense, may be able to see how great the danger was, how evident and by what means it was detected and arrested. First of all, since Catiline, a few days ago, burst out of the city, when he had left behind the companions of his wickedness, the active leaders of this infamous war, I have continually watched and taken care, O Romans, of the means by which we might be safe amid such great and such carefully concealed treachery. Further, when I drove Catiline out of the city, (for I do not fear the unpopularity of this expression, when that is more to be feared that I should be blamed because he has departed alive,) but then when I wished him to be removed, I thought either that the rest of the band of conspirators would depart with him, or that they who remained would be weak and powerless without him.

And I, as I saw that those whom I knew to be inflamed with the greatest madness and wickedness were among us, and had remained at Rome, spent ail my nights and days in taking care to know and see what they were doing, and what they were contriving that, since what I said would, from the incredible enormity of the wickedness, make less impression on your ears, I might so detect the whole business that you might with all your hearts provide for your safety, when you saw the crime with your own eyes. Therefore, when I found that the ambassadors of the Allobroges had been tampered with by Publius Lentulus, for the sake of exciting a Transalpine war and commotion in Gaul, and that they, on their return to Gaul, had been sent with letters and messages to Catiline on the same road, and that Vulturcius had been added to them as a companion, and that he too had had letters given him for Catiline, I thought that an opportunity wits given me of contriving what was most difficult, and which I was always wishing the immortal gods might grant, that the whole business might be manifestly detected not by me alone, but by the senate also, and by you.