Against Alcibiades 2 (9-10)

Moreover, gentlemen, if any of you thinks the penalty a heavy one and the law too severe, he should remember that you have come here, not to legislate on these affairs, but to vote in accordance with the established laws; not to pity the guilty, but much rather to be angry with them and to be protectors of the whole State. For you know well that by punishing a few for what has been done in the past you will improve the discipline of many among those who have to face danger in the future.

And, gentlemen, just as this person has disregarded the State to provide for his own safety, so you should disregard him in voting what is best for the State; especially since you have sworn oaths and have to vote on Alcibiades, who, if he is able to deceive you, will go away mocking at the city. For he will show you no gratitude for the benefit covertly gained from your vote, since he repays with injury the open assistance of any of his friends.