The [collection] of all powers, legislative, executive, and judiciary, in the same hands . . . may justly be [called] the very definition of tyranny. . . .

. . . it will be proper to investigate the sense in which the [protection] of liberty requires that the three great departments of power should be separate and distinct.”

—James Madison, The Federalist Paper No. 47 (1788)



James Madison was the fourth president of the United States and one of the nation’s Founding Fathers.

Which Enlightenment thinker most likely influenced the ideas presented in this quotation by Madison? Explain what this thinker believed and how his ideas relate to the quotation.

The quotation by James Madison suggests that he believed that the powers of government should be divided and distributed among different branches in order to protect liberty. To determine which Enlightenment thinker most likely influenced Madison's ideas, we need to identify a philosopher who advocated for the separation of powers and the importance of checks and balances in government.

The most likely influencer of Madison's ideas in this quotation is the French philosopher Baron de Montesquieu. Montesquieu is best known for his book "The Spirit of the Laws," where he extensively discussed the separation of powers.

Montesquieu believed that concentrating all powers in one person or entity would inevitably lead to a tyrannical government. Instead, he argued that the powers of government should be divided into separate branches: legislative, executive, and judiciary. Each branch would have its own distinct powers and responsibilities, acting as a check on the others to prevent any one branch from becoming too powerful.

This idea of separation of powers was reflected in the U.S. Constitution, with Madison's contribution to the Federalist Papers advocating for the adoption of this principle. Madison agreed with Montesquieu that the separation of powers was crucial to safeguarding liberty and preventing the abuse of power. He believed that no single branch should have complete control over the others, hence the need for checks and balances.

Therefore, it is highly likely that the ideas presented in the quotation by Madison were influenced by the Enlightenment thinker Baron de Montesquieu and his beliefs in the separation of powers and the importance of checks and balances in government.