If the Porlock interruption was a fiction, it would parallel the famous "letter from a friend" that interrupts Chapter XIII of Coleridge's Biographia Literaria just as he was beginning a hundred-page exposition of the nature of the imagination. It was admitted much later that the "friend" was the author himself. In that case, the invented letter solved the problem that Coleridge found little receptiveness for his philosophy in the England of that time.[citation needed]