• The book is an edited and illustrated version of the original one and includes 18 or more unique illustrations which are relevant to its content.• Introduction: “No one now can trace the author, no names are mentioned in the book, though they were given freely in the margin of his manuscript, and I alone know to whom the initials refer. If I have done harm in printing it, I have done none to him, have indeed only carried out his evident intention, and given to a few a secret history, which bears the impress of truth on every page, a contribution to psychology.”