Of many guitar teachers, one opened my mind. The man is Maurizio Angeletti. He uncovered for me a whole world of music, but what most precious he gave was the search of the emotional treasure in it. Never be contented to play 'exactly' a complicated ragtime arrangement. Technics were important, but - he used to quote Robbie Basho - first you ride, than you fly. Not unaccordingly with his vision, Maurizio ended up selling his guitars (and he had some fine ones), forgetting the three excellent vinyls of guitar music he had recorded, and starting a career as a renown kite constructor. I lost contact of him maybe 20 years ago, but I am told that now he lives in Cornwall - probably because he can get plenty of wind for his kites, there. If anyone chances to meet him or hear more precisely about him, I would appreciate to know.
Luigi