I could probably fill this with loads of text describing myself, which is no doubt what it was intended for. However, if I were to be completely truthful, I would have to point out that there is no good reason to believe anything I write here, so why should I go to the bother of writing it?
On the other hand, if I was being completely truthful, then there is every reason to believe anything I write, and then I wouldn't have to tell anyone reading it not to believe me.
But if you were reading this, how would you know whether I was just being completely truthful, or lying through my teeth? Heck, if I told you to believe me, then that would be just as bad, because if I were a liar, I could still tell the truth about everything else, and then lie about whether you should believe me or not. If I told you not to believe me, that might be a true statement, because I could fill the rest of my ranting with more false statements. (Surely you don't expect me to be as simplistic a liar as those blokes in logic puzzles who ALWAYS lie...)
And what if I didn't say whether or not you should believe me? What then?
Confused? So am I! It seems I can't even write anything about myself without running full-tilt into epistemological dilemmas and logical paradoxes.
So what does one do in such a situation? Follow the example of the ancient sages, and remain silent. (Though a more active solution would be to do as the Mentats of Dune do - kick the truth and shatter it!)
And if that isn't enough for you, observe the irony implicit in this entire section - I decide that the wisest course of action is to remain silent, and yet I do this in a long rant bulging at the seams with verbiage, that should, by my own logic, never be used.
Life is weird. Or maybe it's just me. Or a little bit of both. But then you have no reason to believe any of the preceding three sentences, or, for that matter, this one.