No family, no nation, no empire can stand for ever, because it is not permitted by the law of evolution, just as one cannot be a baby always, though one was a baby once upon a time. A baby becomes a mature person, and advances. The law of growth and decay that is seen in the individual personality and things operates even in institutions. This is so, because institutions are only manufactured goods psychologically projected by the characteristics of the individual, which are subject to this evolutionary process of growth, decay, and final extinction. The whole world seems to be subjected to this law of evolution.
Nothing can stand in the same condition for ever.
Now, when one observes this phenomenon of change to which everything seems to be subject, including human individuals, one is dragged, perforce, into a need to investigate into that which changes. If there is change, something is changing. It is not that change itself is changing. Change is a process. It is a condition into which something is subjected, through which something passes.