Having enjoyed the film I devoured the book that transcribes a beautiful way this piece of life of a sensitive teenager and tender. Written in the form of a single sen to match the book follows a year of life and education of a young man become who through meetings and experiences that discovers, light on these problems and accept its past. Faced with existential problems, to tragedies of the past and his shyness, Charlie is struggling to accept and socialize. Through friends he rediscovers, accepts the world and others and finally sheds light on the underlying reasons for his unhappiness. A beautiful and realistic story, easy to read and very touching.