tl;dr version:
"Apres moi le deluge" (Fr.), after me the deluge (attributed to Louis XV)
From wiki:
<< Louis XV (February 15, 1710 – May 10, 1774), ruled as King of France and Navarre from 1715 until his death. Unexpectedly surviving the death of his entire family, he enjoyed a favourable reputation at the beginning of his reign. However, in time, his inability to reform the French monarchy, his lack of morals, and his foreign policy on the European stage lost him the support of his people, and he died as one of the most unpopular kings of France....
Ultimately, Louis XV failed to overcome [serious] fiscal problems, mainly because he was incapable of putting together conflicting parties and interests in his entourage. At Versailles, the king and the nobility surrounding him showed signs of boredom, signalling a monarchy in steady decline. Worse, Louis seemed to be aware of the forces of anti-monarchism threatening his family's rule and yet failed to do anything to stop them. Popular legend holds that Louis predicted, "After me, the deluge" ("Après moi, le déluge"). In fact this quotation is more precisely attributed to Madame de Pompadour, although it is not certain that even she ever said it.
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In other words, after me, who cares what happens to France?
Why should I bother with the burdens of rulership? If the place goes to hell after I'm gone, so be it.
Anyways, this has digressed too much from Musivore's initial question.