There is quite a bit of knowledge, both old and new, floating around about personality and influence. One of my favorites is the "Art of Seduction". Fun-filled, lots of references and citations of literature and history which ties in with the rest of the book's contents. I forget the author, and don't even have the book at home anymore... I leant it out to a friend and haven't gotten it back yet. I think he leant it to somebody else... there's no telling where it is now. No big deal.