Frankly, I am amazed !!! I read this book there is more than a month and I do not smoke since. It was like an electro-shock (well, okay, the early days, still not obvious to find his bearings ...). Not negative, but positive. I enjoyed the humor of the authors, and the fact they do not consider smokers, telling them that it's not good to smoke, it's bad for the health. If you too want to quit smoking, do not deprive yourself: Read this book! Either way, you'll learn a lot about tobacco.