M. Tullius Cicero Pro P. Quinctio 32

[32] Quinctius departs much embarrassed; and no wonder, when so miserable a choice was offered him, and one so unjust, that he must either himself convict himself of a capital offence if he gave security, ¹ or open the cause himself in a capital trial if he gave a bond. As in the one case there was no reason why he should pass an unfavourable sentence on himself (for sentence passed by oneself is the hardest sentence of all), but in the other case there was hope of coming before such a man as a judge, as would show him the more favour the more without interest he was, he preferred to give a bond. He did so. He had you, O Caius Aquillius, for the judge; he pleaded according to his bond; in what I have now mid consists the sum and the whole of the present trial.