This is a book about ten great ideas. Each chapter is an attempt to savor one idea that has been discovered by several of the world’s civilizations - to question it scientifically, and to extract from it the lessons that apply to our modern lives. Jonathan Haidt skillfully combines two genres-philosophical wisdom and scientific research-delighting the reader with surprising insights. He explains, for example, why we have such difficulty controlling ourselves and sticking to our plans; why no achievement brings lasting happiness, yet a few changes in your life can have profound effects, and why even confirmed atheists experience spiritual elevation. In a stunning final chapter, Haidt addresses the grand question 'How can I live a meaningful life?', offering an original answer that draws on the rich inspiration of both philosophy and science.