Born: 18 January 1689 · Died: 10 February 1755 · Age at death: 66
How old was Montesquieu when he died?
Montesquieu died aged 66. He was born on 18 January 1689 and died on 10 February 1755.
his theory of separation of powers in The Spirit of Law which shaped constitutional design in America and beyond
Quick facts
Date of birth18 January 1689
Date of death10 February 1755
Age at death66
NationalityFrench
BirthplaceChâteau de la Brède, France
Editor's Take:
Montesquieu transformed political philosophy by treating government as a subject for scientific comparison rather than moral prescription. His grand tour observations became a laboratory for analysing how climate, culture and institutions interacted across societies. The separation of powers doctrine emerged not from abstract theory but from studying English constitutional practice against French absolutism. That American founders and Russian empresses both claimed his influence reveals the adaptability of his framework. The Catholic Church banned his masterwork whilst British thinkers celebrated it, marking the Enlightenment's geographical fault lines. His legacy lies in making constitutional architecture a deliberate craft.
Key Milestones
1716: Inherited title and parlement office from uncle
1721: Persian Letters brought immediate literary fame
1728: Began three-year European grand tour
1748: Published influential Spirit of Law on governance
Charles Louis de Secondat, baron de La Brède et de Montesquieu (18 January 1689 – 10 February 1755), generally referred to as simply Montesquieu, was a French jurist, historian, and political philosopher.
Montesquieu: Political Philosopher of Separation of Powers
French political philosopher, born 1689
Montesquieu was born in Château de la Brède on 18 January 1689.
Montesquieu published The Spirit of Law in 1748, which influenced the U.S. Constitution and constitutional design worldwide through its theory of separation of powers.
His 1721 satirical work Persian Letters achieved instant literary success by critiquing French society through the fictional eyes of two Persian visitors to Paris.
He spent 1728 to 1731 on a grand tour of Europe, including Austria, Italy, and England, gathering observations on governance and customs that informed his major works.
Montesquieu's birthday is January 18. He was born on January 18, 1689 in Château de la Brède, France.
How old was Montesquieu when he died?
Montesquieu died on February 10, 1755, aged 66.
Who shares a birthday with Montesquieu?
Famous people who share Montesquieu's January 18 birthday include Kevin Costner, Cary Grant, Pep Guardiola, Alexander Van der Bellen and Gilles Deleuze.
