Until now the researchers were not able to define the author(s) of the book of La Celestina. If we have to believe the scholars, then Spanish first book was "El Quijote" and Spanish second book "La Celestina". I follow many ideas of my former friend, Dr. Ricardo Calvo (1943-2002). My hypothesis is that Fernando de Rojas never wrote "La Celestina". It was the poet Juan del Encina.