sentences:  In 1928, he joined El Tiempo, a daily newspaper in Bogotá, where he managed the editorial section, put together the Sunday Literary Supplement and wrote a weekly column, becoming the general manager in 1937.He would continue to contribute articles and opinion pieces to El Tiempo for the rest of his life, speaking out against drug trafficking, Marxist guerrillas and restrictive immigration policies.With the assistance of Carlos Pellicer, he established the Federation of Colombian Students.