Talking much about oneself can also be a means to conceal oneself. ~ Friedrich W. Nietzsche
Think about this next time you're writing some dialogue. Not just writing between the lines or leaving things out but what part of conversation hides things by using camouflage? Politicians use a lot of words to make it seem they are saying a lot but the words they use actually have little meaning, or the size of the words conceals the fact nothing is really being said at all. Still, there are people who will say a lot, seem to be intimate and honest and yet most of what they say is a red herring, keeping people away from what they don't want to say or have known.