[1] A close friend of the prominent Cuban intellectual Dr. Jorge Mañach during their youth, in later years they irremediably distanced themselves due to political issues.

[2] Together with Rubén Martínez Villena, he founded the magazine Venezuela Libre, at the same time that he began intense political activity, clearly anti-imperialist, which led him into exile on several occasions.

He returned to the island after the fall of the dictatorship of Gerardo Machado, although he was soon removed from his chair again for appearing as director of the proletarian newspaper La Word, founded by the Communist Party of Cuba.

Together with Nicolás Guillén, Marinello traveled to Spain in 1937 during the Civil War to attend the Congress of Writers for the Defense of Culture in Madrid and Valencia.

[2] He collaborated in different literary publications, both on the island and abroad (Soviet Union, France, Costa Rica, Venezuela, Mexico, United States, among others) and held various positions as representative of his country before UNESCO.