"Replicatio sermonum" is the second part of the autobiographical trilogy written by the eremitical monk from the region of Bierzo (Iberian Peninsula) Valerius.  He relates the sufferings, attacks of the devil and conflicts he was engaged in during the time of his monastic life. The exact dates of Valerius life as well as dates of composition of his works cannot be establish, it can only be said that he lived and worked roughly in the 2nd half of the 7th c. Apart from the autobiographical writings he composed six short works: De vana saeculi sapientia, Vita et epistola beatissimae Egeriae, De genere monachorum, Dicta beatum Valeri ad beatum Donadeum scripta, De Bonello monacho, De caeleste revelatione. On Valerius of Bierzo see Aherne 1949, Collins 1986, Díaz y Díaz 2006, Martín 2011.