Wikipedia
The Aristoi ( Greek: ἄριστοι) was the label given to the noblemen in ancient Greek society, and in particular ancient Athens. The term literally means "best", with the denotation of best in terms of birth, rank, and nobility, but also usually possessing the connotation of also being the morally best. The term in fact derives similarly with arete: "The root of the word is the same as aristos, the word which shows superlative ability and superiority, and "aristos" was constantly used in the plural to denote the nobility."
Aristoi is a 1992 science fiction novel by Walter Jon Williams. It was one of the preliminary candidates for the 1993 Hugo Award for Best Novel in a particularly competitive year (only the second year in the award's history in which there was a tie). The cover art for Aristoi was nominated for the 1993 Hugo Award for Best Original Artwork.
Usage examples of "aristoi".
May we not even say that that form of government is the best which provides the most effectually for a pure selection of these natural aristoi into the offices of government?