The Egyptians were obsessed with premanence and continuity, seperately and cooperatively. Through continuity they acheived permanence. These can be seen in their architecture, their religious beliefs, and their artwork. The pyramids were built as a final resting place for pharoahs and as such were meant to last for ever so that the pharoahs would be able to come back and use the Pyramid as a home of sorts. Also, their idea of death was not as an end, but as a continuation of their life. They buried their treasures, animals, servants, ships even, in the pyramids with the pharoahs so that they would have them in the next life.
Also, their artwork is constant throughout the entirety of Egyptian history, except for one small blip where it changes and then reverts back to its original form and remains constant until their fall. I think this is because Egypt made their style of artwork their identity, if that makes sense. When any other group of people back then saw something Egyptian they more than likely identified it as Egyptian. To this very day we, as a modern people, still know when we are looking at something Egyptian. Along with their identity, they used their artwork as a constant written language. If they kept changing how they drew things, no one would be able to decipher them. I think that Egypt succeeded in their quest for permanence because even after they fell, they remained constant throughout time in their unique attributes and their interesting history.