In Catilinam

Though there are some men in this body who either do not see what threatens, or dissemble what they do see; who have fed the hope of Catiline by mild sentiments, and have strengthened the rising conspiracy by not believing it; influenced by whose authority many, and they not wicked, but only ignorant, if I punished him would say that I had acted cruelly and tyranically. But I know that if he arrives at the camp of Manlius to which he is going, there will be no one so stupid as not to see that there has been a conspiracy; no one so hardened as not to confess it. But if this man alone were put to death, I know that this disease of the republic would be only checked for awhile, not eradicated for ever. But if he banishes himself; and takes with him all his friends, and collects at one point all the ruined men from every quarter, then not only will this full-grown plague of the republic be extinguished and eradicated, but also the root and seed of all future evils

We have now for a long time, O conscript fathers, lived among these dangers and machinations of conspiracy; but somehow or other, the ripeness of all wickedness, and of this long-standing madness and audacity, has come to a head at the time of my consulship. But if this man alone is removed from this piratical crew, we may appear, perhaps, for a short time relieved from fear and anxiety, but the danger will settle down and lie hid in the veins and bowels of the republic. As it often happens that men afflicted with a severe disease, when they are tortured with heat and fever, if they drink cold water, seem at first to be relieved, but afterwards stiffer more and more severely; so this disease which is in the republic, if relieved by the punishment of this man, will only get worse and worse, as the rest will be still alive.