In this blog post, we will examine Montesquieu’s life, the legal principles outlined in ‘The Spirit of the Laws’, the separation of powers, and his thoughts on laws suited to each nation.
Montesquieu (Charles de Secondat) was a French philosopher and one of the leading figures of the Enlightenment. He was born not into the “robed nobility”—those who held the position of President of the High Court but possessed little actual wealth—nor into the so-called “court nobility,” whose titles were merely nominal, but into a substantial and wealthy provincial noble family. Spending his childhood in the countryside mingling with the children of tenant farmers, his critical awareness of the court culture and institutional uniformity of the absolute monarchy began to take root.
After studying law at the University of Bordeaux, he worked as a lawyer for several years. During this time, he published ‘Letters Persanes’, a satirical work critiquing Europe and Persia, and moved to Paris, where he befriended many literary figures.
In 1726, he renounced the position of President of the High Court, which he had inherited from his uncle, and devoted himself exclusively to writing, taking pride in the fact that he “acquired his wealth directly through the hand of God.”
In 1734, he published ‘On the Causes of the Rise and Fall of Rome’, which can be considered a pioneering sketch of ‘The Spirit of the Laws’, and in 1748, he published his long-awaited magnum opus, ‘The Spirit of the Laws’, on which he had devoted himself for over 20 years. This book, his masterpiece, was such a huge success that it went through 22 editions in just two years.
He believed that law could not be studied through a priori theory alone, but must begin with the concrete realities of our daily lives. Therefore, he meticulously analyzed the principles of the British Constitution, which he regarded as the “mirror of liberty.” He also advocated the theory of the separation of powers, asserting that individual liberty is established only when state power is divided into the three branches—judicial, legislative, and executive—which mutually regulate and check one another.
After a long period of exploration, he discovered the guiding principle, and his magnum opus, ‘The Spirit of the Laws’, which took another 20 years to complete, bears the subtitle “A Child Born Without a Mother.” There are two interpretations of this subtitle: one suggests that the book has no pioneering predecessor to serve as a model, and the other implies that it was written in a country without freedom.
“The Spirit of the Laws” refers to the principles of lawmaking. He viewed law as something related to material, spiritual, and social realities and understood it through empirical science. This is precisely why the subtitle reads, “On the relationship that law ought to have with the constitution, customs, climate, religion, commerce, and other aspects of each political system.”
Political freedom requires the mediation of inner human discernment and wisdom to prevent the abuse of power; this is the so-called separation of powers. Contrary to common claims, what he advocates in ‘The Spirit of the Laws’ is a sophisticated system for the mutual checks and balances of the executive, legislative, and judicial branches. Even if the three branches are separated, if they are independent of the same social forces, how would that differ from despotism?
Another central issue in ‘The Spirit of the Laws’ is the exploration of laws suited to each nation’s identity, customs, and local conditions. This stems from a critical awareness that France at the time was governed by “foreign law”—a term referring to Roman law.
Despite his failing eyesight, he began work on several books in his later years, though most were not published during his lifetime. Only his ‘Travel Notebook’ and ‘Letters’ were published in 1941.
After completing ‘The Spirit of the Laws’, Montesquieu’s health declined significantly, and he passed away in Paris in 1755 at the age of 66.
