Slogans about reading... hmm.. let me think. <span> "Read to succeed", "</span>Your imagination will exceed when a book you read", "A book a day keeps boredom away", "Reading gives us a place to go when here is where we have to stay", "Read and Look what great things are in a book", "If you can read this, Thank a teacher". These are all common slogans from shoutslogans.com. But my personal fav "A book uniquely printed is a book worthwhile" and that wasn't from shoutslogans
Twain uses irony and sarcasm to characterize the king and duke in such a way that communicates his belief that pretending to be something you are not (for the sake of appearances) is both ridiculous and embarrassing.
