Moreover, the Carmelite Rule has had many interpretations and readings. It is true that in recent decades, scientific studies have multiplied and we can assert without exaggeration, that today we know the Rule better than in any other period in our history. Nevertheless, because of that very richness, those multiple dimensions and readings (Biblical, canonical, spiritual, literary, prophetic and so on), because of the possibilities that the Rule contains for different ages, and above all because it is a living text that is still spoken of today, new perspectives and studies are always welcome. For these reasons, then, we welcome in the heart of the Carmelite family this book on the Carmelite Rule prepared by Michelle M. Sauer and Kevin Alban. This is a collection of articles that from many diverse points of view can help us understand better the deep and metahistorical sense of our Rule. Suffice to look at the table of contents to have an idea of the wealth of this book and its interdisciplinary character. The origins of this work go back to the VII centenary of the Rule which was celebrated in 2007. To mark that event a series of meetings and conferences were organised and among them was a study day on the Rule during the International Medieval Congress which takes place every year in the university of Leeds in the UK. Seeing the quality of the different papers, a possible publication was planned which has only been realised now for various reasons. We are all glad that the outcome of that study day can now be published and distributed to a wider public in the whole world, thanks to Edizioni Carmelitane in Rome.