Aquane an ignis sit utilior

Περὶ τοῦ πότερον ὕδωρ ἢ πῦρ χρησιμώτερον Plutarch. Plutarchi Chaeronensis Moralia, Vol. VI. Vernardakēs, Grēgorios N., editor. Leipzig: Teubner, 1895.

Whether water or fire be most useful. (eng) Plutarch. Plutarch's Morals, Vol. V. Goodwin, William W., editor; Fetherston, F., translator. Boston: Little, Brown, and Company, 1874. Whether fire or water is most useful (eng) Plutarch. Moralia, Vol. XII. Cherniss, Harold, and Helmbold, William C., translators. Cambridge, MA: Harvard University Press; London: William Heinemann Ltd., 1957 (printing).