Establishments die when they refuse to make changes; insurgencies die when they fail to discover that protest and governing are not the same things.

From The Tea Party train wreck that never happened by Noemie Emery.

Establishments die when they refuse to make changes; insurgencies die when they fail to discover that protest and governing are not the same things.

Apropos a recent discussion, perhaps a version related to languages and how they change would be

Languages die when they fail to change at all; linguistic variants die when they fail to make a difference.