Where does the devil get this power that you say he has?
This is what that Master General (forgot his name) of the Jesuits was talking about. Getting caught up in what the devil looks like, whether he has a chicken foot or a goat hoof- is exactly what the devil wants us doing. Instead we should understand that evil (he didn't deny that there is evil) is a force in this world that can take on many forms. Like I said, this Master General has a better grasp of evil than Mr. Martin.
ETA: here is the entire quote of Arturo Sosa, SJ Master General :
" In different ways. We need to understand the cultural elements to refer to this figure. In the language of Saint Ignatius it is the bad spirit that leads you to do things that go against the spirit of God. It exists as the evil personified in different structures but not in people, because it is not a person, it is a way of actuating evil. He is not a person like a human person. It is a way for evil to be present in human life. Good and evil are in a permanent struggle in human consciousness [conscience], and we have ways to show them. We recognize God as good, entirely good. Symbols are part of reality, and the devil exists as a symbolic reality, not as a personal reality."