It is the function of the ruler to use his best endeavours to make his subjects happier.
τῶν μὲν γὰρ ἀρχόντων ἔργον ἐστὶ τοὺς ἀρχομένους ταῖς αὑτῶν ἐπιμελείαις ποιεῖν εὐδαιμονεστέρους.
Original text (Ancient Greek)
More quotes by Isocrates
Be gracious to all men, but choose the best to be your friends.
Rather let it be your object to bequeath to your children a stainless name than a large fortune.
Be not content only to praise the virtuous, but imitate them too.
If you are fond of learning, you will soon be full of learning.
Attribution
Quote text and notes from Wikiquote: Isocrates (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.