Spiritism is one of the most beautiful and complete systems of thought that a human being can find to obtain the answers it longs for, in its relentless quest to know and understand the meaning of existence. Completely demonstrated in this book, it presents itself with an extraordinary rich capacity of synthesis, in the evidence of the facts that it investigates, and in the logic of its philosophy with its deep moral and social consequences. Within its pages, the reader will receive great intellectual and spiritual satisfaction exploring a systematic study of the soul, the afterlife, psychic abilities, mediumship, and reincarnation and how these influence our lives. JON AIZPURUA makes a careful consideration regarding the teachings of Spiritism, generally a spiritualist doctrine, but adheres to a more scientific approach. Thus, drawing a specific and definite dividing line of what Spiritism truly is, and between, all superstitious beliefs and practices that with deplorable frequency is presented in its name. Founded on the framework suggested by the wise French educator and paranormal researcher ALLAN KARDEC, its principle statements are a flag that flutters to the winds of genuine spirituality. Few books have brought together the rigor of its scientific basis with clarity to the general public. The study of this work is not just an acquisition of new knowledge, but is a deep spiritual experience.