With regard to the place to which it would be best for them to remove their camp, that, Nikias said, was a question which they might take time to discuss.
Demosthenes, seeing that Nikias was thus obstinate, and conscious that his own project, when adopted, had led to a frightful disaster, ceased pressing him to raise the siege, and gave the other generals to understand that Nikias must have secret reasons, from his correspondents within the city, which led him to persevere thus obstinately in remaining where he was. This caused them also to withdraw their objections to remaining; but when another army came to assist the Syracusans, and the Athenians began to perish from malaria, even Nikias himself agreed that it was time to retreat, and issued orders to his men to hold themselves in readiness to embark.
XXIII. When all was ready, and the enemy off their guard, as they did not expect the Athenians to retreat, an eclipse of the moon took place, which greatly terrified Nikias and some others who, from ignorance or superstition, were in the habit of taking account of such phenomena. That the sun should be sometimes eclipsed even the vulgar understood to be in some way due to the moon intercepting its light: but what body could intercept the moon's light, so that suddenly the full moon should pale its light and alter its colour, they could not explain, but thought that it was a sinister omen and portended some great calamity.
The treatise of Anaxagoras, the first writer who has clearly and boldly explained the phases and eclipses of the moon, was then known only to a few, and had not the credit of antiquity, while even those who understood it were afraid to mention it to their most trusted friends. Men at that time could not endure natural philosophers and those whom they called in derision stargazers, but accused them of degrading the movements of the heavenly bodies by attributing them to necessary physical causes. They drove Protagoras into exile, and cast Anaxagoras into prison, from whence he was with difficulty rescued by Perikles; while Sokrates, who never took any part in these speculations, was nevertheless put to death because he was a philosopher. It was not until after the period of which I am writing that the glorious works of Plato shed their light upon mankind, proving that Nature obeys a higher and divine law, and removing the reproach of impiety which used to attach to those who study these matters, so that all men might thereafter investigate natural phenomena unreproved. Indeed, Plato's companion Dion, although the moon was eclipsed when he was starting from the island of Zakynthus to attack the despot Dionysius, was not in the least disturbed by the omen, but sailed to Syracuse and drove out the despot. Nikias at this time was without a competent soothsayer, for his intimate friend, Stilbides, who used to check a great deal of his superstition, died shortly before this. Indeed, the omen, if rightly explained, as Philochorus points out, is not a bad one but a very good one for men who are meditating a retreat; for what men are forced to do by fear, requires darkness to conceal it, and light is inimical to them. Moreover men were only wont to wait three days after an eclipse of the moon, or of the sun, as we learn from Autokleides in his book on divination; but Nikias persuaded them to wait for another complete circuit of the moon, because its face would not shine upon them propitiously before that time after its defilement with the gross earthy particles which had intercepted its rays.[3]
XXIV. Nikias now put all business aside, and kept offering sacrifices and taking omens, until the enemy attacked him. Their infantry assailed the camp and siege works, while their fleet surrounded the harbour, not in ships of war; but the very boys and children embarked in what boats they could find and jeered at the Athenians, challenging them to come out and fight. One of these boys, named Herakleides, the son of noble parents, ventured too far, and was captured by an Athenian ship. His uncle Pollichus, fearing for his safety, at once advanced with ten triremes which were under his command; and this movement brought forward the rest of the Syracusan fleet to support him. An obstinate battle now took place, in which the Syracusans were victorious, and many of the Athenians perished, amongst whom was their admiral Eurymedon. And now the Athenians refused to remain before Syracuse any longer, and called upon their generals to lead them away by land, for the Syracusans after their victory had at once blockaded the entrance to the harbour, so that no passage was left. Nikias and the other generals refused to agree to this proposal, as they thought it would be a pity to abandon a fleet of so many transports, and nearly two hundred ships of war. They placed the flower of the land force on board the ships, with the best of the slingers and darters, and manned one hundred and ten triremes, for they had not sufficient oars for a larger number. Nikias now abandoned the great camp and walls of investment, which reached as far as the temple of Herakles, and drew the army up on the beach as spectators of the battle. Thus the Syracusan priests and generals were able for the first time since the siege began to sacrifice to Herakles, as they were wont to do, while the people were manning their fleet.
XXV. The Syracusan soothsayers promised them the victory if they awaited attack and did not begin the attack: for Herakles himself never struck the first blow, but always waited for his enemies to attack him. The sea-fight which now took place was the fiercest and most obstinately contested of all those which took place throughout the war, and its varying fortunes were shared with agonizing interest by the Athenian army and the citizens on the walls of Syracuse, who were able from their respective positions to overlook the whole battle and watch the manœuvres of each ship. The Athenians were placed at a great disadvantage by having all their ships collected into one mass, where they were attacked from all sides by the lighter and more manageable vessels of the enemy. The Syracusans also used stones as missiles, which strike with equal effect, however they are thrown, while the Athenians replied with volleys of arrows and javelins, whose aim was often spoiled by the motion of the vessels, and which are useless unless they fly with the point foremost. All these details had been foreseen and taught to the Syracusans by Aristion the Corinthian steersman, who fell in the moment of victory. The Athenians were finally routed and driven ashore with great slaughter, and their retreat by sea completely cut off. Knowing how difficult it would be to make their way to any place of safety by land, they allowed themselves to be so paralyzed by despair, that they let the Syracusans tow away their ships as prizes, without making an effort to save them, and actually neglected to ask for a truce for the burial of their dead. They seemed to think that the case of the sick and wounded whom they saw amongst them, and whom they must perforce abandon when they left their camp, was even more pitiable than that of the floating corpses, and they actually envied the lot of the slain, knowing well that after a few more days of suffering they themselves were all destined to share their fate.
XXVI. They were all eager to depart during the night which followed this disastrous day; but Gylippus, perceiving that the people of Syracuse were so given up to feasting and merry-making, celebrating both their victory and the festival of their national hero Herakles, to whom the day was sacred, that they could not be either forced or persuaded into attempting to harass the enemy's retreat, sent some of those men who had formerly been in correspondence with Nikias to tell him not to attempt to retreat that night, as all the roads were occupied by Syracusans lying in wait to attack him. Deceived by this intelligence, Nikias waited to find what he feared in the night turned into a reality on the following day. At daybreak the passes were occupied by the Syracusans, who also threw up entrenchments at all the places where rivers had to be forded, and broke all the bridges, stationing their cavalry upon the level ground, so that the Athenians could not advance a step without fighting. The Athenians remained for all that day and the following night in their camp, and then set out, with such weeping and lamentation that it seemed rather as if they were leaving their native country than a hostile one, so distressed were they to see the miseries of their friends and relatives, and of the sick and wounded who were unable to accompany their march and had to be left to their fate, while they themselves had a presentiment that their present sufferings were nothing in comparison with those which awaited them. Among all these piteous sights, Nikias himself offered a glorious example. Worn out by disease, compelled by the exigencies of the retreat to forego the medicines and treatment which his condition required, he nevertheless, weak as he was, did more than many strong men could do, while all his men knew well that he made those efforts, not from any wish or hope to save his own life, but that it was solely on their behalf that he did not give way to despair. The tears and lamentations of the rest were prompted by their own private sorrows and fears, but the only grief shown by Nikias was that so splendid an expedition should have ended in such miserable failure. Those who watched his noble bearing and remembered how earnestly he had opposed the whole scheme, were filled with compassion for his undeserved sufferings. They began to despair of the favour of Heaven being shown to themselves, when they reflected that this man, careful as he had always been to perform every religious duty, was now no better off than the humblest or the most wicked soldier in his army.
XXVII. Nikias made heroic efforts by cheerful looks, encouraging speeches, and personal appeals to his followers, to show himself superior to fortune. Throughout the retreat, although for eight days in succession he was constantly harassed by the attacks of the enemy, he nevertheless kept the division under his command unbroken and undefeated, until the other part of the army under Demosthenes was forced to surrender, being completely surrounded in an enclosed olive-ground, the property of Polyzelus, brother of the despot Gelon. Demosthenes himself drew his sword and stabbed himself, but not mortally, for the Syracusans quickly interposed and forced him to desist. When the Syracusans told Nikias of this disaster, and allowed him to send horsemen to convince him of its truth, he proposed terms to Gylippus, which were that the Athenians should be allowed to leave Sicily, on condition of the repayment of the whole expenses of the war, for which he offered to give hostages. These terms were refused, and the enemy with insulting cries and threats proceeded to shoot with missiles of all kinds at the Athenians, who were now completely without food or drink. Yet Nikias prevailed upon them to hold out during that night, and on the following day he led them, still under fire from the enemy, across the plain leading to the river Asinarus. There some were forced into the stream by the enemy, while others cast themselves in to quench their thirst. A most dreadful slaughter now took place, the Athenians being wild with thirst, and the Syracusans killing them as they drank, until Nikias surrendered himself to Gylippus, saying, "I beseech you, now that you are victorious, to show some mercy, not to me, but to the Athenian troops. Consider how changeful is the fortune of war, and how gently the Athenians dealt with your men in their hour of victory."
Gylippus was visibly affected by the words, and by the sight of Nikias; for he knew how well the Spartan prisoners had been treated by him, when the peace was made with Athens; moreover, he thought that it would be a great honour to him if he could carry home the enemy's commander-in-chief as a prisoner. He received Nikias with kindness, and gave orders to take the rest of the Athenians alive. It was long, however, before these orders were understood and obeyed, so that more Athenians were slain than survived, although many were spared by the Syracusans in order that they might be sold for slaves.
The prisoners were now assembled together, and their arms and armour hung upon the trees by the river side, as a trophy of the victory. The victors next crowned themselves with garlands, decorated their horses, cut off the manes and tails of the captured horses, and marched back into their own city, having by their courage and skill won the most complete victory ever gained by one Greek state over another.