M. Tullius Cicero Divinatio in Q. Caecilium 48

[48] Next to him he has, as I think, Allienus; he indeed does belong to the bar, but however, I never took any particular notice of what he could do in speaking; in raising an outcry, indeed, I see that he is very vigorous and practiced. In this man all your hopes are placed; he, if you are appointed prosecutor, will sustain the whole trial. But even he will not put forth his whole strength in speaking, but will consult your credit and reputation; and will abstain from putting forth the whole power of eloquence which he himself possesses, in order that you may still appear of some importance As we see is done by the Greek pleaders; that he to whom the second or third part belongs, though he may be able to speak somewhat better than his leader, often restrains himself a good deal, in order that the chief may appear to the greatest possible advantage, so will Allienus act; he will be subservient to you, he will pander to your interest, he will put forth somewhat less strength than he might.