τὸν εὐτυχεῖν δοκοῦντα μὴ ζήλου
πρὶν ἂν θανόντ’ ἴδῃς· ὡς ἐφήμεροι τύχαι.
Euripides, Heracleidae 865–866
Envy not the seeming lucky man
Before you see him dead: for fortunes fade.
Euripides, The Children of Hercules 865–866
The title is Dax Riggs quoting Omar Khayyám from The Rubaiyat, 63 (12th century).
Thanks, dear reader, for trying. But can we keep our peace today?