You could come to realize the nature of reality, in Buddhist thought. The three marks of reality in Buddhism are anatta(not-self), annica(impermanence), and dukkha(suffering/dissatisfaction).
The basic teachings of Buddha say that all things share those attributes.
So, in practical terms, all things will pass, and things aren't necessarily what they seem, and attachment causes suffering. Even more practically -- don't take everything so seriously.
MBSR is becoming increasingly common in cognitive behavioral therapy as well -- it's interesting (to me) to see how much intersection there is between meditative practice and what cognitive behavioral therapy is discovering. Different paths to the same conclusions.
> Reality can be defined as the set of results which are determined to appear from the problems that things in the world have. Because these results are determined in a fixed principle, someone who knows Buddha's teaching can easily recognize an discuss any field of study at length without difficulty, even if they've never studied it before, because they can realize how it works and thus recognize the problems (matters) involved in the field through the person they're talking to.
I don't agree with this. My perception of reality is: examining without adornment, recognizing anatta and anicca. That is, to look at all things without coloration from judgement and to recognize them both in their selves and not-selves(in other words, the simultaneous existence and non-existence of a phenomenon, related to its dependent origination from the surroundings).
I don't think it has anything to do with an egotistical human view of "reality" -- such as being able to understand any subject without having been exposed to it. Of course you can't understand anything without having been exposed to it... you are still a human, you still have a brain, you still have memories and collected knowledge.
Reality isn't, to me, about words or concepts, but instead it concerns the inherent nature of phenomena.
The basic teachings of Buddha say that all things share those attributes.
So, in practical terms, all things will pass, and things aren't necessarily what they seem, and attachment causes suffering. Even more practically -- don't take everything so seriously.