Ошибочно приписывается Плутарху, хотя в "Моралиях" он цитирует слова Биона.
Boys throw stones at frogs in fun, but the frogs do not die in fun, but in earnest.
Variant translation: Boys throw stones at frogs for fun, but the frogs don't die for "fun", but in sober earnest.
As quoted by Plutarch, Moralia, xii. 66