He continued: “Tolkien just broke that rule, and I’ll love him forever for it. The minute you kill Gandalf, the suspense of everything that follows is a thousand times greater, because now anybody could die.
“Of course, that’s had a profound on my own willingness to kill characters off at the drop of a hat.”
All this means the news about a number of cast members making the cross between fantasy worlds seem a fitting choice.
Amazon’s new adaptation of Lord of the Rings is expected to begin production in 2020 but it could be a while before it reaches screens.
Game of Thrones seasons 1-8 are now available to buy on DVD.