What is meditation? When we speak of “meditation”, we are referring primarily to the set of practices of concentration and recollection that are typical of many Eastern philosophies or religions, and that aim to achieve knowledge and personal well-being. But there is a broader meaning of the term, by which we mean any activity of recollection aimed at encountering an absolute dimension. In this sense, it is possible to trace paths of meditation even in Judaism, Christianity and Islam. In each of these traditions there are different understandings of meditation and its practices: this book introduces them to us.