Aeschylus,
The Prometheus Bound of Æschylus
(1866)
“ Know thine own self, and change into new ways, Since the monarch among gods is new himself. But, if thou still thus hurlest keen-edged words And passionate, it may be Zeus, though throned In the far heights, shall hear thee, so the wrath Thou bearest now may come to seem to thee 340 (322) Mere child's-play hardship. Nay, thou evil fated, Dismiss thy rage and seek thy woes an end. What I would say may seem to thee worn trite, But such, Prometheus, truly is the meed Of a too braggart tongue. Thou no way yet 345 (327) Hast humbled thee nor bowed thee to thine ills. ”
