The spirits' book (O livro dos espíritos - inglês):

After you have read The Spirits’ Book, you will no longer have any reason to fear death. The Spirits’ Book will provide you with the answers to nearly all the questions you may have with regards to the origin, nature and destiny of each and every soul on earth – and those of other worlds as well. It also addresses the issues of God, creation, moral laws and the nature of spirits and their relationships with humans. The book contains answers that were dictated to mediums by highly evolved spirits who love God. The Spirits’ Book is the initial landmark publication of a Doctrine that has made a profound impact on the thought and view of life of a considerable portion of humankind since the first French edition was published in 1857.