Without further speculation, it is possible that Berrogaray had read that book because, on his own texts and in his defense, he repeats the idea of the separation between the political and the religious items, ideas that match one of Puglia's book conclusions.
Sin especular demasiado, es muy probable que Berrogaray haya leído dicho libro ya que, en sus escritos y alegatos de defensa, repite la idea de la separación entre lo político y religioso, concepción que concuerda con una de las conclusiones del libro de Puglia.