When I learn that husband and wife never quarrel, I know that indifference has set in, and after that — the deluge.

Minna Antrim
Minna Antrim (1861-1950) American epigrammatist, writer
Naked Truth and Veiled Allusions (1902)
    (Source)

King Louis XV of France is attributed with saying, "Après moi, le déluge [After me, the flood]" to Madame Pompadour in 1757.