Rousseau, Jean-Jacques

If Sparta and Rome perished, what State can hope to endure for ever? If we would set up a long-lived form of government, let us not even dream of making it eternal. If we are to succeed, we must not attempt the impossible, or flatter ourselves that we are endowing the work of man with a stability of which human conditions do not permit. [Chapter 11 Death of the Body Politic; The Social Contract]