Luna stood, and levitated the book on magical theory over to Twilight.  “Now, we must take our leave.  Our duties must be performed.  Read through the first chapter of the book, but then we must insist that sleep take thee.”  She looked at the unicorn threateningly.  “We shall know if thou hast not.  On the morrow thou shall meet thy tutor, and we desire that thou shall be alert and rested.”