XIV. Subsequently, on the hill to which the Spartans and Thespians had finally retired, a lion of stone was erected by the Amphictyons, in honour of Leonidas; and many years afterward the bones of that hero were removed to Sparta, and yearly games, at which Spartans only were allowed to contend, were celebrated round his tomb. Separate monuments to the Greeks generally, and to the three hundred who had refused to retreat, were built also, by the Amphictyons, at Thermopylae. Long extant, posterity admired the inscriptions which they bore; that of the Spartans became proverbial for its sublime conciseness. "Go, stranger," it said, "and tell the Spartans that we obeyed the law--and lie here!" The private friendship of Simonides the poet erected also a monument to Megistias, the soothsayer, in which it was said truly to his honour, "That the fate he foresaw he remained to brave;" Such is the history of the battle of Thermopylae (B. C. 480). [70] CHAPTER VII. The Advice of Demaratus to Xerxes.--Themistocles.--Actions off Artemisium.--The Greeks retreat.--The Persians invade Delphi, and are repulsed with great Loss.--The Athenians, unaided by their Allies, abandon Athens, and embark for Salamis.--The irresolute and selfish Policy of the Peloponnesians.--Dexterity and Firmness of Themistocles.--Battle of Salamis.--Andros and Carystus besieged by the Greeks.--Anecdotes of Themistocles.--Honours awarded to him in Sparta.--Xerxes returns to Asia.--Olynthus and Potidaea besieged by Artabazus.--The Athenians return Home.--The Ostracism of Aristides is repealed. I. After the victory of Thermopylae, Demaratus advised the Persian monarch to despatch a detachment of three hundred vessels to the Laconian coast, and seize the Island of Cythera, of which a Spartan once (foreseeing how easily hereafter that post might be made to command and overawe the Laconian capital) had said, "It were better for Sparta if it were sunk into the sea." The profound experience of Demaratus in the selfish and exclusive policy of his countrymen made him argue that, if this were done, the fears of Sparta for herself would prevent her joining the forces of the rest of Greece, and leave the latter a more easy prey to the invader. The advice, fortunately for the Greeks, was overruled by Achaemenes. Meanwhile the Grecian navy, assembled off Artemisium, was agitated by divers councils. Beholding the vast number of barbarian ships now collected at Aphetae, and the whole shores around swarming with hostile troops, the Greeks debated the necessity of retreat.