A while back at one blog or another--I seem to think it was at Patrick's but it may have been at TSO's, or perhaps both, I was disconcerted to read that someone thought nonfiction reading more worthwhile than fiction to the point where they rarely, if ever read fiction. This is not meant to be critical of that attitude, but to present another side of that coin.
Of recent date, I have grown so strongly suspicious of nearly all nonfiction that reading almost any of it is a waste of time for me. When I was reading Mandelbrot's book on the misbehavior of markets, I kept wondering what evidence contradictory to his conclusions was he suppressing. As I read Pat Buchanan, I couldn't help but think that everything was informed by the bias of the observer and I was uncertain that things he cited as historical fact were indeed. I remember commenting to TSO after he had read one or another of John Cornwell's books, "Why did you waste the time, now you have to read three others just to see if anything he stated was, in fact, true."
What I've discovered over time is that nonfiction books very rarely present anything like nonfiction. That is, most postmodern nonfiction. When your view of reality is that reality is shaped by the language you use to describe it and by the oppressions, hidden or overt that define it, it would be difficult to present anything in an objective way, because there cannot be any objectivity.
Fiction, on the other hand, shows me the human condition, and because the author lays his cards on the table on way or the other, I can determine whether what is shown is truly reflective of human experience or is shaped by the bias of the author to lead me to an agenda. If the latter, and if the agenda is one that I do not like, I am likely to throw the book across the room. But when it is an agenda I concur with, such as Flannery O'Connor, I get so much better a snapshot of reality than in any nonfiction I've read in the last ten years.
In addition, I tend to read nonfiction that I know I agree with the standpoint of the author. Problem there is that I continually push my own bias to the point of obliquity.
Fiction presents a picture of life that can be measured by our experience of life. As a result, some of the pictorial representations of life arrive at a time when we are not ready to pursue or truly understand them. I don't think most of Henry James is even remotely accessible to most people under 40. There are always extraordinary exceptions, but even among them, I notice the focus is not so much on what James has to say, but on the way he goes about saying it. We hear much praise of his psychological novelistic technique, and so forth, but little about whether what he says in The Golden Bowl is true, in part, I believe because many of the commenters simply haven't the experience in years to know whether or not James is relating the truth or a truth about human relationships.
Fiction, therefore, might be at once more informative and less informative about the human condition--more informative because you are presented less with facts than with the reality of the created world--something you can't fact check. Less informative because the world is created and you aren't learning anything substantive about the empirical reality of this world.
And that's where fiction soars--it is very rarely about empirical reality in the point of objective fact, it is more about nuance and subtlety and understanding human interactions and relationships. Fiction presents a world and asks you to look and experience and judge and find satisfying or wanting. Nonfiction seems to present a "here are the facts" scenario, when in fact it presents a "here are the facts I want you to know in order to understand my point." How many books are there on the religious views of the Founding Fathers? And how many opinions? And these all purport to be nonfiction and to be telling us the truth about the Founding Fathers. And yet, if you read every one of them are you a nanometer closer to knowing what the founding fathers thought? Or are you, more likely, more entrenched in your own conceptions or those conceptions amenable to your viewpoint.
Philosophical books are somewhat better in this regard. The problem with most of them is that they take certain things for granted as starting points, and if you question one of those things, then the underlying construct becomes shaky. For example, if you should question St. Thomas Aquinas's assertion that the intellect is a positive good, nearly the entire system of thought falls apart. What if you think the intellect is merely neutral? What if you regard the intellect as a potential good or a potential evil depending upon how it is formed? What then? Other philosophical systems have similar sorts of problems. However, you can at least enter the system and sometimes ferret out what the underlying assumptions are and holding in abeyance judgment on their validity, you can assess the merits of an argument.
Well enough. It is my contention that I have learned far more about life and the things that really matter from fiction, or from non-fiction disguised as fiction than I ever did from reading non-fiction. C.S. Lewis's vision of heaven and hell in The Great Divorce has done more to make me think seriously of the last things that any dozen books of straight theology on the last things.
All this said, we are different people, differently constructed. It is through coming to an appreciation of these differences and attempting to view the world from the other side that we grow (in part). I will still consume nonfiction in minuscule and carefully regulated quantities, but I can at least try to do so now, appreciating the sage advice of many in St. Blog's who appreciate it more than I do.