What has the author John Salisbury written?

You're likely thinking of John Gardner, not John Salisbury. He is the author of the "Grendel" novel, a retelling of the classic epic *Beowulf* from the perspective of the monster Grendel.

John Salisbury was a medieval philosopher and historian who wrote several important works, including:

* "Policraticus" (a treatise on good government)

* "Metalogicon" (a treatise on logic)

* "Historia Pontificalis" (a history of the papacy)

If you meant to ask about John Gardner's works, he has also written several other books, including:

* "October Light"

* "The Sunlight Dialogues"

* "Nickel Mountain"

* "The Art of Fiction"

* "On Becoming a Novelist"

Let me know if you'd like to know more about either of these authors!