The Book of Spirits: Containing the principles of the spirit doctrine of the immortality of the soul, the nature of spirits and their relationship with ... the future life and future of humanity (Paperback)
Read it several years ago and I must admit it is quite complex. It's very interesting and educational. In addition, it makes you think of our existence as a soul. All subjects spend there and thinking is at its peak. I want to clarify that it does no
