In Faerie, these changelings composed words of all kinds for their masters, from poetry to plays to nonfiction. Authors may even have been their Keepers’ only connection with mortal language, having to explain precisely what words are and how they held power. Authors still see things in terms of words — ideal nouns and adverbs swim unasked through their minds.
The Author has mastered the Polyglot’s Riddle: he gains the 8 again rule to all Expression rolls dealing with writing or wordy endeavors. With a successful Wits + Academics roll, he can also deduce the meaning of written text in any mortal language.