What is the author's tone in The Other Wind by Ursula K. Le Guin?

The language used in the book is archaic and simple, used very particularly by the author to create the mood of Earthsea. Character's all speak fairly formerly to each other with many references to honour, oaths, courage and destiny: the use of this sort of language informs us immediately that we are actually inside a fairytale as we travel with Alder inside the book.