Talking much about oneself can also be a means to conceal oneself.
Friedrich Nietzsche (1844 - 1900)
The only thing i do not like about the quote is that it's nothing but common sense. But even common sense can be interesting. I think the only reason i talk about myself to people i don't really know that well is to make them see a certain picture of me. Something that isn't truely me but more compatible with what most people would rather want me to be like. I shouldn't do that and this quote reminded me of that.