M. Tullius Cicero, Orations, The fourteen orations against Marcus Antonius (Philippics)
C. D. Yonge, Ed.

[17] What reason, then, is there why the army of Marcus Brutus should be an object of suspicion to those men who with the whole of their energies desire the preservation of Decimus Brutus?

But, moreover, if there were any thing which were to be feared from Marcus Brutus, would not Pansa perceive it? Or if he did perceive it, would not he, too, be anxious about it? Who is either more acute in his conjectures of the future, or more diligent in warding off danger? But you have already seen his zeal for, and inclination toward Marcus Brutus. He has already told us in his speech what we ought to decree, and how we ought to feel with respect to Marcus Brutus. And he was so far from thinking the army of Marcus Brutus dangerous to the republic, that he considered it the most important and the most trusty bulwark of the republic. Either, then, Pansa does not perceive this (no doubt he is a man of dull intellect), or he disregards it. For he is clearly not anxious that the acts which Caesar executed should be ratified,—he, who in compliance with our recommendation is going to bring forward a bill at the comitia centuriata for sanctioning and confirming them.