In this enlightening book, the author argues how the world is in fact getting better, not worse, thanks to values of the Enlightenment such as reason, science, and humanism. He provides abundant data indicating improvement in health, wealth, safety, peace, and happiness which run contrary to the prevailing negativism in today's media. The book calls on its readers to appreciate the strides made by humanity and keep on supporting Enlightenment principles in order to correct present and future ills. It is a very persuasive appeal for optimism and reasoned thinking in a world that all too frequently tends towards pessimism.