To me it seems that as far as regards the maintenance of concord among the citizens, the security of the Laconian territory and the preservation of the freedom of Sparta, the legislation of Lycurgus and the foresight he exhibited were so admirable that one is forced to regard his institutions as of divine rather than human origin. For the equal division of landed property and the simple and common diet were calculated to produce temperance in the private lives of the citizens and to secure the commonwealth as a whole from civil strife, as was the training in the endurance of hardships and dangers to form brave and valorous men. Now when both these virtues, fortitude and temperance, are combined in one soul or in one city, evil will not readily originate within such men or such peoples, nor will they be easily overmastered by their neighbours. By constructing, therefore, his constitution in this manner and out of these elements, Lycurgus secured the absolute safety of the whole territory of Laconia, and left to the Spartans themselves a lasting heritage of freedom. But as regards the annexation of neighbouring territories, supremacy in Greece, and, generally speaking, an ambitious policy, he seems to me to have made absolutely no provision for such contingencies, either in particular enactments or in the general constitution of the state. What he left undone, therefore, was to bring to bear on the citizens some force or principle, by which, just as he had made them simple and contented in their private lives, he might make the spirit of the city as a whole likewise contented and moderate. But now, while he made them most unambitious and sensible people as regards their private lives and the institutions of their city, he left them most ambitious, domineering, and aggressive towards the rest of the Greeks.
For who is not aware that they were almost the first of the Greeks to cast longing eyes on the territory of their neighbours, making war on the Messenians out of covetousness and for the purpose of enslaving them? And is it not narrated by all historians how out of sheer obstinacy they bound themselves by an oath not to desist from the siege before they had taken Messene? It is no less universally known that owing to their desire of domination in Greece they were obliged to execute the behests of the very people they had conquered in battle. For they conquered the Persians when they invaded Greece, fighting for her freedom; but when the invaders had withdrawn and fled they betrayed the Greek cities to them by the peace of Antalcidas, in order to procure money for establishing their sovereignty over the Greeks; and here a conspicuous defect in their constitution revealed itself. For as long as they aspired to rule over their neighbours or over the Peloponnesians alone, they found the supplies and resources furnished by Laconia itself adequate, as they had all they required ready to hand, and quickly returned home whether by land or by sea. But once they began to undertake naval expeditions and to make military campaigns outside the Peloponnese, it was evident that neither their iron currency nor the exchange of their crops for commodities which they lacked, as permitted by the legislation of Lycurgus, would suffice for their needs, since these enterprises demanded a currency in universal circulation and supplies drawn from abroad; and so they were compelled to be beggars from the Persians, to impose tribute on the islanders, and to exact contributions from all the Greeks, as they recognized that under the legislation of Lycurgus it was impossible to aspire, I will not say to supremacy in Greece, but to any position of influence.
But what is the purpose of this digression? It is to show from the actual evidence of facts, that for the purpose of remaining in secure possession of their own territory and maintaining their freedom the legislation of Lycurgus is amply sufficient, and to those who maintain this to be the object of political constitutions we must admit that there is not and never was any system or constitution superior to that of Lycurgus. But if anyone is ambitious of greater things, and esteems it finer and more glorious than that to be the leader of many men and to rule and lord it over many and have the eyes of all the world turned to him, it must be admitted that from this point of view the Laconian constitution is defective, while that of Rome is superior and better framed for the attainment of power, as is indeed evident from the actual course of events. For when the Lacedaemonians endeavoured to obtain supremacy in Greece, they very soon ran the risk of losing their own liberty; whereas the Romans, who had aimed merely at the subjection of Italy, in a short time brought the whole world under their sway, the abundance of supplies they had at their command conducing in no small measure to this result.
(Source: Polybius, The Histories, Vol.IIΙ, Book VI, Loeb Classical Library)
The letter lambda was used by the Spartan army as a symbol of Lacedaemon of Sparta
Research-Selection for NovoScriptorium: Anastasius Philoponus