Denis Diderot revolutionized the Age of Enlightenment as the co-founder of Encyclopédie, which was banned for questioning religion. He had flirted with the idea of joining the theater and becoming a priest, and even studied law, but later devoted himself to languages, literature, and philosophy.
French poet Guillaume Apollinaire was a significant figure of the avant-garde movement. It is believed he had coined the terms Cubism, Surrealism, and Orphism. Known for his iconic poem Chanson du mal-aimé, written after being rejected by a lover, he also developed the typography-based concrete poetry in the collection Calligrammes.