What impact did the ideas of Montesquieu have on the creation of the Constitution? James Madison used the idea of a three-branch system described in Montesquieu’s The Spirit of the Laws. Benjamin Franklin inserted Montesquieu’s ideas into the Delaware Compromise during the Philadelphia Convention. George Washington designed the executive branch to emulate Montesquieu’s views on human rights. Thomas Jefferson included the idea of social contract theory when proposing the constitution before Congress.