Long interested in journalism and historical investigation, he worked with the newspapers El Fígaro and La Nación. He directed the literary page of Diario de la Marina from 1927 to 1929, using it as a platform to support the contemporary Spanish avant-garde literary movements, often called the vanguardia. He collaborated on a number of anti-imperialist publications such as Venezuela Libre and América Libre, and later became involved in Communist activities.
Long fascinated by journalism and historical research, he worked with newspapers El Fígaro and La Nación. He managed the literary section of Diario de la Marina from 1927 to 1929, using it as a venue to promote contemporary Spanish avant-garde literary movements, often referred to as the vanguardia. He contributed to several anti-imperialist publications such as Venezuela Libre and América Libre, and later became involved in Communist activities.