There is nothing permanent except change. [Therefore enjoy what good you have while you have it and endure and outlast what bad you can't cure immediately]
HeraclitusI see nothing but Becoming. Be not deceived! It is the fault of your limited outlook and not the fault of the essence of things if you believe that you see firm land anywhere in the ocean of Becoming and Passing. You need names for things, just as if they had a rigid permanence, but the very river in which you bathe a second time is no longer the same one which you entered before
HeraclitusNo same man could walk through the same river twice, as the man and the river have since changed.
HeraclitusEverything flows and nothing abides; everything gives way and nothing stays fixed... Cool things become warm, the warm grows cool; the moist dries, the parched becomes moist... It is in changing that things find repose.
Heraclitus