The question was once put to him, how we ought to behave to our friends; and the answer he gave was, “As we should wish our friends to behave to us.”
He used to define justice as “A virtue of the soul distributive of what each person deserved.”
Another of his sayings was, that education was the best viaticum for old age.
Phavorinus, in the second book of his Commentaries, says that he was constantly repeating, “The man who has friends has no friend.” And this sentiment is to be found also in the seventh book of the Ethics.
These apophthegms then are attributed to him.
XII. He also wrote a great number of works; and I have thought it worth while to give a list of them, on account of the eminence of their author in every branch of philosophy. Four books on Justice; three books on Poets; three books on Philosophy; two books of The Statesman; one on Rhetoric, called also the Gryllus; the Nerinthus, one; the Sophist, one; the Menexenus, one; the Erotic, one; the Banquet, one; on Riches, one; the Exhortation, one;