Regum et imperatorum apophthegmata

Plutarch

Plutarch. Moralia, Vol. III. Babbitt, Frank Cole, translator. Cambridge, MA: Harvard University Press; London: William Heinemann Ltd., 1931 (printing).

Eudamidas, seeing Xenocrates, already well on in years, discussing philosophy with his pupils in the Academy, and being informed that he was seeking after virtue, said, And when will he make use of it? [*](Cf. Moralia, 220 D.)