http://intjforum.com/ -it's a cool forum, it's basically 100% INTJ's on there got some good philosophy discussions and found this from a link that my cousin sent me on philosophy, they really seem to get into being that personality type, those people really make a lot of us look kinda simple, bet there are a few authors on that website if nothing else
and i do insurance sales, not really a psychologist more of an armchair one if anything