Giovanni Papini (1881-1956) lived a strange life where he went from being an aggressive atheist to a religious fanatic, toward the end of his days. He was, in his times, a very popular writer, but readers have lost interest in his works. However, "Gog" considered his masterpiece and which is an ironical collection of philosophical writings, supposedly written by an arch millionaire, who has been looking for the meaning of life, is still popular. A second part, "The black book", even if written in the same style, doesn't have the brilliancy of the first. Giovanni Papini (1881-1956) tuvo una extraña vida en la que pasó de ser ateo agresivo a fanático religioso en el final de sus días. Fue un escritor muy popular en su época pero que ha perdido poco a poco interés entre los lectores, aunque "Gog", considerada su obra maestra, que es una colección irónica de trozos filosóficos, supuestamente escrita por un archimillonario que ha estado buscando el significado de la vida es aún popular. Una segunda parte "El libro negro" aunque hecho en la misma tónica, no tiene la brillantez del primero. Note: This audioboook is in Spanish.