One of the most important books ever written. I reckon it as the best book I've read so far. Very lucid and comic writing based on writer's personal experience of over 5 decades as a UN health specialist and real data on a very important topic. Defying popular belief Mr. Rosling has shown us a future of hope and semi utopia. I am an optimistic person, I always have kept hope of a better future of the world in my mind, and this book has helped me to cement the thought. I must thank Mr. Bill Gates for recommending this book.