JUST DISCOURSE: Do not bandy words with your father, nor treat him as a dotard, nor reproach the old man, who has cherished you, with his age.

Aristophanes (c. 450-c. 388 BC) Athenian comedic playwright

Clouds, ll. 998-999 (423 BC) [tr. Athenian Soc. (1912)]
    (Source)

Alt. trans.:

• JUST ΛΟΓΟΣ: "[Learn] not to contradict your father in any thing; nor by calling him Iapetus, to reproach him with the ills of age, by which you were reared in your infancy." [tr. Hickie (1853)]
• RIGHT LOGIC: "Nor dare to reply when your Father is nigh, nor 'musty old Japhet' to call / In your malice and rage that Sacred Old Age which lovingly cherished your youth." [tr. Rogers (1924)]