Labienum ab illo discessisse propemodum constat. Si ita factum esset ut ille Romam veniens magistratus et senatum Romae offenderet, magno usui causae nostrae fuisset. Damnasse enim sceleris hominem amicum rei publicae causa videretur, quod nunc quoque videtur sed minus prodest;
it is agreed that Labienus has almost left Caesar. If it had happened in this way that Labienus, on coming to Rome, met the magistrates and senate at Rome, he would have been of much use for our cause. Labienus seems to have condemned a friend of his of a crime for the sake of the Republic, a thing which now also seems the case but is less useful (Cic. Att.7.13.1);
and in the pain that it caused Caesar:
Labienum heroa iudico. Facinus iam diu nullum civile praeclarius, qui ut aliud nihil hoc tamen profecit: dedit illum dolorem;
I judge Labienus a hero. There is no political move for a long time more glorious. If Labienus has not accomplished anything else, he has caused Caesar pain (Cic. Att. 7.13.1).