Spartan institutions were pictured as a model of political stability from the Classical period onwards. The so-called Spartan ‘mirage’ did not involve only its constitutional order but also social and economic institutions. Xenophon begins his Constitution of the Lacedaemonians by associating Spartan fame with the politeia set up by Lycurgus, which made the Laconian city the most powerful (δυνατωτάτη) and famous (ὀνομαστοτάτη) polis in Greece (Xen. Lac. 1.1). In Aristotle's Politics, in which the assessment of Sparta is more complex and nuanced, one finds a critique of contemporary Spartan institutions as well as praise for Lycurgus as a great lawgiver who established the laws of Sparta (Arist. Pol. 2.1269a69, 2.1273b20). Most other ancient sources often remark upon the unchangeable features of some Spartan institutions as a key aspect of Spartan εὐνομία. Thucydides maintains that, after a long period of war and stasis, the Dorians established excellent laws and Sparta employed the same constitution for more than four hundred years (Thuc. 1.18.1: τετρακόσια καὶ ὀλίγῳ πλείω ἐς τὴν τελευτὴν τοῦδε τοῦ πολέμου ἀφ᾽ οὗ Λακεδαιμόνιοι τῇ αὐτῇ πολιτείᾳ χρῶνται).