M. Tullius Cicero Pro A. Cluentio 6

[6] And, therefore, O judges, I beg this of you before I begin to speak of the cause itself; in the first place, as is most reasonable, that you will bring no prejudice into court with you. In truth, we shall lose not only the authority, but even the name of judges, unless we judge from the facts which appear in the actual trials, and if we bring into court with us minds already made up on the subject at home. In the second place, I beg of you, if you have already adopted any opinion in your minds, that if reason shall eradicate it,—if my speech shall shake it,—if, in short, truth shall wrest it from you, you will not resist, but will dismiss it from your minds, if not willingly, at all events, impartially. I beg you, also, when I am speaking to each particular point, and effacing any impression my adversary may have made, not silently to let your thoughts dwell on the contrary statement to mine, but to wait to the end, and allow me to maintain the order of my arguments which I propose to myself; and when I have summed up, then to consider in your minds whether I have passed over anything.