How did Montesquieu inspire the James Madison?

The Founding Fathers, most especially James Madison, drew upon Montesquieu’s theory of the separation of powers when drafting the Constitution.  Montesquieu argued that the best way to secure liberty and prevent a government from becoming corrupted was to divide the powers of government among different actors who would check each other.  For example, Montesquieu warned that “Were the executive power not to have a right of restraining the encroachments of the legislative body, the latter would become despotic; for as it might arrogate to itself what authority it pleased, it would soon destroy all the other powers.”

its main object was the establishment of "settlement houses" in poor urban areas, in which volunteer middle-class "settlement workers" would live, hoping to share knowledge and culture with, and alleviate the poverty of, their low-income neighbors.