Michael Dirda at The Washington Post:
As a novel, “Dune” has never been unconditionally admired. I know sophisticated readers, devoted science fiction fans, who can’t stand it, finding Herbert’s prose inept, the action ponderous, and the whole book clumsy and tedious. But sf readers are contentious, often cruelly so, and nearly all of the field’s most beloved novels and series also have cogent and vocal detractors: Isaac Asimov’s “Foundation” trilogy is dismissed as period pulp; Robert A. Heinlein’s “Starship Troopers” and “Stranger in a Strange Land” preach either militaristic jingoism or pretentious ’60s claptrap; Samuel R. Delany’s “Dhalgren” is well nigh unreadable and Gene Wolfe’s “The Book of the New Sun” too subtle, too theological, too clever by half. Perhaps so. Yet imaginative works that people still argue about — and “Dune” certainly belongs in this category — demonstrate their continuing vitality and relevance. They remain — to borrow a vogue phrase — part of the conversation.
more here.