Please, save me the platitudes. Everything falls in time, including things of "substance", and the eventual fall of a bureaucratic authoritarian government really makes no difference at all to those who are damaged long before that happens.
Things of substance do not fall. Pythagoras remains. Hypatia's discovery that the earth revolves around the sun could not be destroyed along with the library at Alexandria. So do the pyramids remain; the use of phurbas, red sticks and totems. The teachings of Teotihuacan; the ideal of true democracy and of the forum.
Things built upon lies, shallow thought, ineptitude, and manipulation fall. The nanny state will fall.