Full Idea
In a monarchy, the laws must make the nobility hereditary, not to serve as the boundary between the power of the ruler and the weakness of the people, but as the tie that binds them together....
Gist of Idea
In a monarchy, the nobility must be hereditary, to bind them together
Source
Baron de Montesquieu (The Spirit of the Laws (rev. 1757) [1748], 05.09)
Book Reference
Montesquieu,Baron de: 'Selected Political Writings', ed/tr. Richter,Melvin [Hackett 1990], p.148
A Reaction
This seems rather disingenuous. If the nobility are bound together in some tight manner, this immediately serves as a sharp boundary between them and the rest of the people. Monarchs are bound to want the strict boundary.