Then as to Dinias. Perhaps he will tell you of the war-galleys he has equipped and of his other public services. For my part, though Dinias has proved himself a valuable servant of the public, as I sincerely believe, I would urge him rather to claim from you some reward for himself than to tell you to take back rewards previously given to others; for a man gives a surer proof of excellence by claiming a reward for his own services than by grudging others the rewards they have received for theirs. But the most effective retort is one which applies to all the commissioners alike. Each one of them has often before served as commissioner for some business or other. Now you have a very sound law—not, of course, directed against these men, but framed to prevent any commissioner from using his opportunity for profit or blackmail—that no one, elected by the people, be permitted to serve as commissioner more than once. Surely those who are going to advocate a law and urge its necessity ought to show themselves ready to obey existing laws; otherwise it is absurd for them to defend one law as commissioners and violate another themselves. Take and read the law which I cite. [The law is read] That, Athenians, is both an old and a sound law, But it seems to have become obsolete, for sound reasons. which the commissioners will be careful not to violate, if they are wise. I have still a few things to say to you before I sit down. For you ought, in my opinion, men of Athens , to be anxious for the utmost possible efficiency of our laws, but especially of those on which depends the strength or weakness of our State. And which are they? They are those which assign rewards to those who do good and punishments to those who do evil. For in truth, if from fear of legal penalties all men shunned wrongdoing, and if from ambition for the rewards of good service all chose the path of duty, what prevents our city from being great and all our citizens honest, with not a rogue among them? Now the law of Leptines, Athenians, does harm not only by abolishing the rewards of good service and so rendering fruitless the good intentions of those who are ambitious for honor, but also by leaving our city under the serious reproach of imbecility. For you are of course aware that for each grave offence a single penalty is provided by the law, which says explicitly that at any trial there shall be not more than one assessment of penalty, whichever the court imposes, whether a personal punishment or a fine, but not both.