"In order to keep you from this, I proceed to show that no one state has ever injured you as much as Mitylene. I can make allowance for those who revolt because they cannot bear our empire, or who have been forced to do so by the enemy. But for those who possessed an island with fortifications; who could fear our enemies only by sea, and there had their own force of galleys to protect them; who were independent and held in the highest honour by you- to act as these have done, this is not revolt- revolt implies oppression; it is deliberate and wanton aggression; an attempt to ruin us by siding with our bitterest enemies; a worse offence than a war undertaken on their own account in the acquisition of power. The fate of those of their neighbours who had already rebelled and had been subdued was no lesson to them; their own prosperity could not dissuade them from affronting danger; but blindly confident in the future, and full of hopes beyond their power though not beyond their ambition, they declared war and made their decision to prefer might to right, their attack being determined not by provocation but by the moment which seemed propitious. The truth is that great good fortune coming suddenly and unexpectedly tends to make a people insolent; in most cases it is safer for mankind to have success in reason than out of reason; and it is easier for them, one may say, to stave off adversity than to preserve prosperity. Our mistake has been to distinguish the Mitylenians as we have done: had they been long ago treated like the rest, they never would have so far forgotten themselves, human nature being as surely made arrogant by consideration as it is awed by firmness. Let them now therefore be punished as their crime requires, and do not, while you condemn the aristocracy, absolve the people. This is certain, that all attacked you without distinction, although they might have come over to us and been now again in possession of their city. But no, they thought it safer to throw in their lot with the aristocracy and so joined their rebellion! Consider therefore: if you subject to the same punishment the ally who is forced to rebel by the enemy, and him who does so by his own free choice, which of them, think you, is there that will not rebel upon the slightest pretext; when the reward of success is *******, and the penalty of failure nothing so very terrible? We meanwhile shall have to risk our money and our lives against one state after another; and if successful, shall receive a ruined town from which we can no longer draw the revenue upon which our strength depends;while if unsuccessful, we shall have an enemy the more upon our hands, and shall spend the time that might be employed in combating our existing foes in warring with our own allies.
"No hope, therefore, that rhetoric may instil or money purchase, of the mercy due to human infirmity must be held out to the Mitylenians. Their offence was not involuntary, but of malice and deliberate; and mercy is only for unwilling offenders. I therefore, now as before, persist against your reversing your first decision, or giving way to the three failings most fatal to empire- pity, sentiment, and indulgence. Compassion is due to those who can reciprocate the feeling, not to those who will never pity us in return, but are our natural and necessary foes: the orators who charm us with sentiment may find other less important arenas for their talents, in the place of one where the city pays a heavy penalty for a momentary pleasure, themselves receiving fine acknowledgments for their fine phrases; while indulgence should be shown towards those who will be our friends in future, instead of towards men who will remain just what they were, and as much our enemies as before. To sum up shortly, I say that if you follow my advice you will do what is just towards the Mitylenians, and at the same time expedient; while by a different decision you will not oblige them so much as pass sentence upon yourselves. For if they were right in rebelling, you must be wrong in ruling. However, if, right or wrong, you determine to rule, you must carry out your principle and punish the Mitylenians as your interest requires; or else you must give up your empire and cultivate honesty without danger. Make up your minds, therefore, to give them like for like; and do not let the victims who escaped the plot be more insensible than the conspirators who hatched it; but reflect what they would have done if victorious over you, especially they were the aggressors. It is they who wrong their neighbour without a cause, that pursue their victim to the death, on account of the danger which they foresee in letting their enemy survive; since the object of a wanton wrong is more dangerous, if he escape, than an enemy who has not this to complain of. Do not, therefore, be traitors to yourselves, but recall as nearly as possible the moment of suffering and the supreme importance which you then attached to their reduction; and now pay them back in their turn, without yielding to present weakness or forgetting the peril that once hung over you.
Punish them as they deserve, and teach your other allies by a striking example that the penalty of rebellion is death. Let them once understand this and you will not have so often to neglect your enemies while you are fighting with your own confederates."Such were the words of Cleon. After him Diodotus, son of Eucrates, who had also in the previous assembly spoken most strongly against putting the Mitylenians to death, came forward and spoke as follows: