A few months before his death, Nahuel Moreno received a letter from one of the greatest Argentine intellectuals, the writer, dramatist, actor, and psychotherapist Eduardo Pavlovsky. Pavlovsky, who for fifteen years had been part of the current that Moreno founded, reflects very important concerns about the role of Sandinism and Castro in the Central American revolution. We think it is useful to make known that letter and the response that Moreno sent him, since it expresses important debates.