The conquest of Messenia in the eighth century, by the grandfathers of Tyrtaeus's generation, provided the foundation for a sophisticated and cultivated lifestyle. Foreign poets like the Lesbian Terpander and Cretan Thaletas were welcome guests. Ivory and gold ornaments, bronze vessels of ornate workmanship, fine pottery and the odes of Alcman all testify to refined tastes, continuing even into the sixth century. The continuance of those luxuries was "dearly purchased" in blood and toil by Tyrtaeus's generation when the Messenians revolted, and the ensuing war and civil strife inspired his entire poetic work. The crisis was mentioned by Aristotle for its instructive power: