The Atreides star has risen. Paul is emperor and rules the universe from his seat on Arrakis, transforming the empire into a theocracy. And yet Chani, the imperial concubine, has still not produced an heir. 
 Dune Messiah was not nearly as good as Dune, but it was still very interesting. Paul's reaction to becoming Muad-Dib - a kind of prophet - have greatly shaped my views on religion and on those who seem eager to speak on behalf of a god. This book does suffer from some sequelitis (trying to be both the original and it's own book, but failing to strike the right balance between the two), but it's still very much worth the read.