A New York Times article matches the speech patterns of 13(!) American presidential candidates with the books they sound like. There's a fascinating graphic that puts candidates and books on a sort of coordinate plane grid based on where their language use falls from simple to complex (y axis) and negative to positive (x axis).
Most negative? Rand Paul, who's surrounded by the Aeneid and Oliver Twist.
Most simple? Donald Trump (surprised?), who's next to The Legends of King Arthur and The Adventures of Huckleberry Finn.
Hillary's on the positive and complex side of the plane, and most closely matches Austen's Persuasion (which isn't on the grid but is mentioned at the bottom of the article). Ted Cruz is matched with Beowulf.