Authors:

Republics end through luxury; monarchies through poverty.

"The Spirit of the Laws" by Charles de Secondat, Baron de Montesquieu, Book VII: Consequences of the Different Principles of the Three Governments with Respect to Sumptuary Laws, Luxury and the Condition of Women, Ch. 4: Of Sumptuary Laws in a Monarchy, 1748.
Republics end through luxury; monarchies through poverty.