What prevented the Messenians from joining at first the Achæan League was as follows. They had of their own accord gone to the aid of the Lacedæmonians when they were attacked by Pyrrhus the son of Æacus, and for this good service there were already friendlier relations between themselves and Sparta. They did not therefore wish to revive the old feud by going to the Achæan League, as the Achæans were most openly hostile to the Lacedæmonians. And what has not escaped my notice, and cannot have escaped the notice of the Messenians is that, even had there been no Achæan League, the Achæans would have been hostile to the Lacedæmonians, for among the Achæans the Argives and Arcadians were no small element. In process of time however the Messenians joined the Achæan League. And not long afterwards Cleomenes, the son of Leonidas and grandson of Cleonymus, took Megalopolis the chief town of the Arcadians in truce time. In the capture of the town about a third of the inhabitants were captured or slain, but Philopœmen the son of Craugis and those who escaped with him (and they say that rather more than two thirds of the people of Megalopolis got away) were kindly received by the Messenians, partly on account of the ancient friendliness which the Arcadians had first exhibited in the days of Aristomenes, and partly in consequence of the part they had taken in the rebuilding of Messene. The Messenians even went so far as to assign to the Arcadians equal rights to themselves. Such vicissitudes and changes are there in all human affairs, that the deity put it into the power of the Messenians to preserve in turn the Arcadians, and (what was still less to be expected) one day to capture Sparta. For when they fought against Cleomenes at Sellasia they joined Aratus and the Achæans in taking Sparta. And when the Lacedæmonians had got rid of Cleomenes, there rose up against them the tyrant Machanidas: and after his death Nabis sprang up as tyrant over them. And, as he not only plundered men but also sacrilegiously robbed the holy places, in no long time he amassed considerable sums of money, and got together with this money an army. And when he occupied Messene Philopœmen and the people of Megalopolis made a sally by night, and the Spartan tyrant departed on conditions. And the Achæans after this, in consequence of some difference with the Messenians, marched out against them in full force, and ravaged their territory. And again about harvest time they collected a force for the purpose of attacking Messenia, but Dinocrates a prominent man among the people, who had been recently elected ruler of the Messenians, forced Lycortas and the army with him to retire without effecting their object, and having occupied the byroads between Messenia and Arcadia he protected[58] the Messenians in their town and in all the neighbouring districts. And when Philopœmen with a few cavalry came a little later than the army of Lycortas, not having