To interpret literature I

Since I live in a university city I try to take a few courses now and then. Of course it helps that taking courses at a Swedish university is free. Now I am taking a course in literature with some connection to rhetoric, which is my main topic at the moment. Although I have a background in science I find it rewarding to learn what people do in other areas of academia. It is not always easy to understand what people are talking about before you actually dive into a subject.
When I was studying philosophy I got a very good advice from a teacher. “Just because you don't understand what someone is saying doesn't mean that they are stupid and what they say is nonsense. “ One very important point that he didn't mention is of course that to not understand someone does not exclude the possibility that they are stupid and talk nothing but nonsense. What is important is to give people the benefit of a doubt. In debates you often see how people interpret their opposition's opinion as negative as possible. But this is not the ideal in academia, here you should always extend the best possible interpretation to the text you study.
It is probably even more important for sceptics than for many others to not assume the worst reading of a text. Some sceptics appear to think that just because a text uses terms that they are unfamiliar with, a convoluted form of reasoning, or concern a topic that they consider unscientific the text must be without merit. Since sceptics often encounter texts that have all the above characteristics and that really are nonsense we may to some degree be excused, but non the less it is better to always begin with the assumption that it is your own fault if you don't understand how brilliant a text is.
Now this tirade about strange complicated texts that still may have some kind of understandable message and even value, is not a critique of the course I am taking. Although some theories in the study of literature strike me to be more opinion than tools to reach understanding. This is just the background to my simple observation during our most recent class in the course.