French former atheists and agnostics

French philosopher, writer, and social activist (1909–1943)

French surgeon and biologist

French diplomat, poet and playwright (1868-1955)

French philosopher, playwright, music critic and leading Christian existentialist (1889-1973)

French writer, playwright and critic (1852–1935)

French novelist and art critic (1848–1907)

French poet, essayist, and editor (1873–1914)

French writer (1808-1889)

French philosopher (1882–1973)

French Catholic religious man, explorer and scholar (1858–1916)

French historian, literary critic, and philosopher of social science

French writer, poet and essayist (1846–1917)

French lexicographer and philosopher (1801-1881)

French writer (1915–1995)

French writer (1849–1906)

French historian and writer (1901–1965)

French writer (1907-1951)

French writer and philosopher

French historian and Orthodox theologian (1921–2009)

French Catholic author, poet, and mystic (1904–1964)

French writer (1875–1944)

French biophysicist and philosopher (1883-1947)

Russian poet and philosopher (1883-1960)

Estonian-French writer (1909-1966)