4 sizes, 4 wise, rich reflection on the world, on our relation to society, the world and to ourselves: an invitation to reconnect with ourselves, with others, with Nature. The book is full of practical advice to implement daily and addresses, tracks and valuable links. I was a reader follower of Pierre Rabhi, convinced by agroecology, however I knew little mindfulness meditation and something repelled me probably. But this book presents the practice of clear, accessible, without religious connotation, and scientific evidence supporting about its benefit. In short, after reading this, I turned to the Emergences Association (who coordinated this work) to achieve a meditative mindfulness cycle ... this book has done well his call to put into practice! Let's read many: first steps to change us ... and to change the world, a revolution of consciences and actions!