27. For neither did Aristides amongst the Athenians, nor Cato amongst the Romans often execute the office of magistrate; and yet both the one and the other employed their whole lives perpetually in the service of their country. And Epaminondas indeed, being general, performed many and great actions; but yet there is related an exploit of his, not inferior to any of them, performed about Thessaly when he had neither command in the army nor office in the state. For, when the commanders, having through inadvertency drawn a squadron into a difficult and disadvantageous ground, were in amaze, for that the enemies pressed hard upon them, galling them with their arrows, he, being called up from amongst the heavy-armed foot, first by his encouraging them dissipated the trouble and fright of the army, and then, having ranged and brought into order that squadron whose ranks had been broken, he easily disengaged them out of those straits, and placed them in front against their enemies, who, thereupon changing their resolutions, marched off. Also when Agis, king of Sparta, was leading on his army, already put in good order for fight, against the enemies, a certain old Spartan called out aloud to him, and said, that he thought to cure one evil by another; meaning that he was desirous the present unseasonable promptness to fight should salve the disgrace of their over-hasty departure from before Argos, as Thucydides says. Now Agis, hearing him, took his advice, and at that present retreated; but afterwards got the victory. And there was every day a chair set for him before the doors of the government house, and the Ephori, often rising from their consistory and going to him, asked his advice and consulted him about the greatest and most important affairs; for he was esteemed very prudent, and is recorded to have been a man of great sense. And therefore, having now wholly exhausted the strength of his body, and being for the most part tied to his bed, when the Ephori sent for him to the common hall of the city, he strove to get up and go to them; but walking heavily and with great difficulty, and meeting by the way certain boys, he asked them whether they knew any thing stronger than the necessity of obeying their master; and they answering him that inability was of greater force, he, supposing that this ought to be the limit of his service, turned back again homewards. For a readiness and good will to serve the public ought not to fail, whilst ability lasts; but when that is once gone, it is no longer to be forced. And indeed Scipio, both in war and peace, always used Caius Laelius for a counsellor; insomuch that some said, Scipio was the actor of those noble exploits, and Caius the poet or author. And Cicero himself confessed, that the honorablest and greatest of his counsels, by the right performance of which he in his consulship preserved his country, were concerted with Publius Nigidius the philosopher.