“What makes me want to keep reading a nonfiction text is the encounter with a surprising, well-stocked mind as it takes on the challenge of the next sentence, paragraph, and thematic problem it has set for itself. The other element that keeps me reading nonfiction happily is an evolved, entertaining, elegant, or at least highly intentional literary style. The pressure of style should be brought to bear on every passage. “Consciousness plus style equals good nonfiction” is one way of stating the formula. For me, the great adventure in reading nonfiction is to follow, as I say, a really interesting, unpredictable mind struggling to entangle and disentangle itself in a thorny problem, or even a frivolous problem that is made complex through engagement with a sophisticated mind.”