 In the modern debate we also hear echoes of the doctrine propounded in The Spirit of the Laws (1748: Bk. 26, ch. 15, p.510) that “things that depend on principles of civil right must not be ruled by principles of political right”. “Civil right”—Montesquieu’s word for what we call private law—is, he said, “the palladium of property”, and it should be allowed to operate according to its own logic, not burdened with the principles of public or political regulation. A failure of the Rule of Law in this regard is likely to lead to the impoverishment of an economy, as expectations collapse, and owners’ incentives for production and enterprise are undermined (Montesquieu 1748: Bk. V, ch. 14, p. 61).