The work contains whatever Isidore , an influential Christian bishop , thought worth keeping .
Isidore acknowledges Pliny , but not his other principal sources , namely Cassiodorus , Servius and Solinus .
The work contains whatever Isidore , an influential Christian Isidore , thought worth keeping .
Isidore acknowledges Pliny , but not his other principal sources , namely Cassiodorus , Servius and Solinus .