The Egyptians knew about time. Those huge pyramids and buried tombs. They knew that nothing much lasted, and the best anyone could do was to make it big, extensive and preferably of stone. They knew that in a couple of decades most of what we are will be dust, much of who we were will be forgotten. A pyramid is simultaneously a mark of personal triumph - “I built this!” - and a mark of human insignificance.
These are the two poles of what it means to be human.