A beautiful and moving book, where the author, through scholarly studies or familiar notes, says his love of a human world that is both sensual and spiritual, full, deep, rich relationships and meaning, he sees disappearing gradually under the mass of technical aids and pseudo- "progress" answering artificial needs created from scratch. Which distances us more and more of our earthly condition, her pain but also joy and beauty, to submit vacuum machines and expert requirements. Ivan Illich also wondered what in history and Western Christian tradition, he claims for his own, or nurtured allowed this perversion. The depth of reflection in this book combines the emotion palpable, especially in the last article.