All life is only a set of pictures in the brain, among which there is no difference betwixt those born of real things and those born of inward dreamings, and no cause to value the one above the other.
Does the High Priest allow you to use a player's building, or only a resource region that a player has built?
Our interpretation was no, since the rules differentiate between action spaces and resource regions, but if so, it seems like an odd distinction for the role.
Our take was no as well. The HP can only use a resource space/region as I believe that's what it says on the board.