Erberto monaco di Clairvaux ed arcivescovo di Torres

Is retraced, also through the careful reading of the works of monaco, the trajectory of cultural and spiritual Herbert in the twelfth century, from his entrance as a novice to the Abbey of Clairvaux until the destination to the diocese logudorese. Reconstructing the relations between Herbert and the judge Gonnario pilgrim to the Holy Land and then himself monaco.