He likens the revered editor to the character Prince Myshkin in The Idiot : innocent and vulnerable, someone who must be protected.
The Idiot includes a character called Prince Myshkin. 
mnli hypothesis: The Idiot includes a character called Prince Myshkin.  premise: He likens the revered editor to the character Prince Myshkin in The Idiot : innocent and vulnerable, someone who must be protected.