Related:

• Mix's Law: There is nothing more permanent than a temporary building.
  There is nothing more permanent than a temporary tax....
• Nothing is as temporary as that which is called permanent.
• Nothing is as permanent as that which is called temporary.
• Jose's Axiom: Nothing is a temporary as that which is called permanent.
  Corollary: Nothing is a permanent as that which is called temporary....
• Nothing is so permanent as a temporary government program. -- Milton Friedma
• Felines... nothing more than felines...
• Network: An electronic means of allowing more than one person at a time to corrupt, trash, or otherwise cause permanent damage to useful data.
• Politics is nothing more than medicine on a grand scale.
• Liberals are nothing more than lobbyists for criminals.