Since there is a great confusion about the different components of the spiritual anatomy of man, Alexandru Eugen Cristea has made his mission to clarify the various concepts found in the works of Gurdjieff, Ouspensky, Orage and their followers, explaining terminology such as: parts, centers, sub-centers, bodies, etc.Practical exercises are given for the development of each center and body, some of them available to the public for the first time ever.Preface...