In his book The Last Exorcist—composed of texts from various blogs, Father Amorth reports an entire dialogue he had, in his role as exorcist, with the devil.
Father Amorth: “What are the virtues of the Madonna that make you angriest?”
Demon: “She makes me angry because she is the humblest of all creatures, and because I am the proudest; because she is the purest of all creatures, and I am not; because, of all creatures, she is the most obedient to God, and I am a rebel!”
Father Amorth: “Tell me the fourth characteristic of the Madonna that makes you so afraid of her that you are more afraid when I say the Madonna’s name than when I say the name of Jesus Christ!”
Demon: “I am more afraid when you say the Madonna’s name, because I am more humiliated by being beaten by a simple creature, than by Him…”
Father Amorth: “Tell me the fourth characteristic of the Madonna that makes you most angry!”
Demon: “Because she always defeats me, because she was never compromised by any taint of sin!”
“During an exorcism,” Father Amorth remembers, “Satan told me, through the possessed person, ‘Every Hail Mary of the Rosary is a blow to the head for me; if Christians knew the power of the Rosary, it would be the end of me!'”