The book "Portier des Chartreuses, or Memoirs of Saturn, written by himself" is a unique literary work, which is a collection of memoirs of a character who reveals his life and destiny to the reader. Authors Gervaise de Latouche and Jean-Charles in their book reveal to us the story of Saturn - the porter of the Chartreuse monastery, which turns out to be full of secrets, adventures and philosophical considerations. In this book, the reader will be able to feel the atmosphere of a medieval monastery, the mystery of its life and the religious world of monks. Saturninus talks about his unusual encounters, inner doubts, reflections on faith and piety, as well as about the horrors he had to experience. "Portier des Chartreuses, or Memoirs of Saturn, written by himself" is not only the story of one character, but also reflections on faith, fate and the purpose of a person in this world. This book will definitely leave a mark in the hearts of readers and make them think about the deep questions of life.