Cesar Vallejo was born in 1892 in Peru. His first book defined literary Indigenism, while his second, Trilce, foreshadowed many innovations of modernism. In 1923, he moved to Paris where he became a prolific journalist. Contra el secreto profesional, written in the 20s, integrates issues of social justice with innovative poetics. During this period he traveled three times to the Soviet Union. He became a member of the Congress of Antifascist Writers in Madrid and visited the front lines of the Spanish Civil War. His later poetry, Poemas humanos, was published a year after his death in 1938.