I was intersted in John's comment "I have this theory that it is the novels that we read as teenagers that really influence our personality." I recall as an early teenager - keep in mind this was yonks ago as I am well into my fifties now - I read with eagerness each and every one of the 58 novels in the Elinor Brent-dyer Chalet School Series. These were set firstly in the Tiensee then Guernsey, later Wales and also back to Switzerland. A very multi-cultured school where English was spoken one day, French the next, German the 3rd, Saturday any one of these of one's choice, the students all coming from different countries to school there. The changes of location followed world events, the move from Austria co-inciding with the outbreak of war.
Another special feature were the half-term holidays to different places in Europe all carefully described in delightful historical detail. I lapped up the difference in this school series, learned all sorts of snippets of geography, history and languages so that when I later travelled to Austria for example I felt I already knew some small parts of it. As a fairly insular teenager these books broadened my world both in terms of knowledge of places, cultures etc but also in terms of people.
Maybe a much lower key contribution here but the series was significant enough to find me now still owner of all 58 books and taking quiet inotice of the current collecters' interest being shown both here in Australia and in the UK in the author and her work. I seem to have not been alone in enjoying these books.
Back to John's comment though - here I am a teacher who takes a real interest in different students and enjoys the interaction with them as people, perhaps I am just delving in a real world now not my past imaginary one.