Regum et imperatorum apophthegmata

Plutarch

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

Hiero, who succeeded Gelo as despot, used to say that not one of the persons who spoke frankly to him chose the wrong time.

He felt that those who divulged a secret committed a serious offence also against those to whom they divulged it; for we hate, not only those who divulge such things, but also those who hear what we do not wish them to hear.