Robert Hardy is a famous English actor, who was - at Oxford - both a tutee of C.S Lewis and pupil of JRR Tolkien. In a recent recorded interview he was asked about his memories and views on this subject, and in the process came-up with a very striking and poetic description of how he regards Satan's activities in the modern world. It seemed worth transcribing and recording:
Question: The Tolkien books are clearly a struggle between good and evil and I presume you share that belief and therefore they speak to you very strongly?
Hardy: Well yes I do share that belief.
I believe that Satan walks with very quiet shoes and very fast pace all around us all the time.
But, by contrary, I also believe that there is a God who will perhaps, one day, keep Satan in his place...