A classic of science fiction, which had moved me to tears when I read it in my youth, and keeps its strength and power, many years later ... The life of the mentally retarded in which will be offered the opportunity to become intelligent, sees her world change with the new perception and understanding he has ... Whole sections of human existence which seemed to him forever prohibited finally opened to him. It even reaches heights that are given very few of us ... But (because there is a but ...), the end will be tragic, and a clear awareness of what is happening in the makes it even more tragic ... (Like description of the book contains the 'spoiler', and the film that many people know the story, anyway, it's not bother to hide this rollover status).
In short, if you have not read it yet, I think you should not deprive yourself of this bittersweet pleasure longer ...