Lochites is one of these persons. For even though he was too young to have belonged to
 the oligarchy established at that time, yet his character at any rate is in harmony with
 their regime. For it was men of like disposition who betrayed our power to the enemy,
 razed the walls of the fatherland, and put to death without a trial fifteen hundred
 citizens. Cf. Isoc. 7.67 ,
 where the same number of victims is given; cf. also Isoc.
 4.113 . 
 We may reasonably expect that you, remembering the past, will punish, not only those who
 then did us harm, but also those who wish now to bring our city into the same condition as
 then; and you should punish potential criminals with greater severity than the malefactors
 of the past in so far as it is better to find how to avert future evils than to exact the
 penalty for past misdeeds. Do not wait for the time when these enemies shall unite, seize an opportune moment, and
 bring ruin upon the whole city, but whenever on any pretext they are delivered into your
 hands, punish them, thinking it a stroke of luck when you catch a man who in petty
 derelictions reveals his complete depravity. It would indeed have been best, if only some distinguishing mark were borne by men of
 base nature, So also Eur. Med.
 516-519 : O Zeus, ah wherefore hast thou given to men Plain
 signs for gold which is but counterfeit, But no assay-mark nature-graven
 shows On man's form, to discern the base withal. (Translation by
 Way in L.C.L.) that we might punish them before any fellow-citizen has been
 injured by them. But since it is impossible to perceive who such men are before a victim
 has suffered at their hands, at any rate as soon as their character is recognized, it is
 the duty of all men to hate them and to regard them as enemies of all mankind. Remember, too, that while the poor have no share in the danger of loss of property, yet
 fear of injury to our persons is common to all alike; in consequence, whenever you punish
 thieves and cheats you benefit only the rich, but whenever you chastise those who commit
 mayhem, you give aid to yourselves.