Raymond AronRaymond Claude Ferdinand Aron (; French: [ʁɛmɔ̃ aʁɔ̃]; 14 March 1905 – 17 October 1983) was a French philosopher, sociologist, political scientist, historian and journalist, one of France's most prominent thinkers of the 20th century.
Aron is best known for his 1955 book The Opium of the Intellectuals, the title of which inverts Karl Marx's claim that religion was the opium of the people; he argues that Marxism was the opium of the intellectuals in post-war France. In the book, Aron chastised French intellectuals for what he described as their harsh criticism of capitalism and democracy and their simultaneous defense of the actions of the communist governments of the East. Critic Roger Kimball suggests that Opium is "a seminal book of the twentieth century". Aron is also known for his lifelong friendship, sometimes fractious, with philosopher Jean-Paul Sartre.