This thing all things devours:
Birds, beasts, trees, flowers;
Gnaws iron, bites steel;
Grinds hard stones to meal;
Slays king, ruins town,
And beats high mountain down.
Any living object, however mighty, can only last till their lifespan after which they must perish in accordance wih the laws of nature.
Hence, the required answer to the problem must be "time".
Nice Problem.
Edited on March 11, 2023, 10:30 am