Master Teacher Kuthumi, with contributions from his colleagues, expands our understanding of the reincarnation process not only on Earth, but on other planets as well. Kuthumi emphasizes the role of the soul family in planning incarnations and balancing karma. He explains the history of past-lives amnesia. He introduces us to Earth's mission in this galaxy, the first human souls to support that mission and their search for physical bodies. He offers previously unrevealed insights into Earth's first three root races. Interspersed throughout, three of Kuthumi's colleagues from off Earth share firsthand experience of reincarnation on other planets - their individual home worlds. In an appendix well worth deeper study, Master Teacher Djwhal Khul updates and clarifies Ageless Wisdom's "seed of mind," creating a pathway to conceptual integration of Earth's first human souls with scientifically documented early humans. He explains Ageless Wisdom's "animal man" within the context of the material Kuthumi presents and concludes with a ponder-on-this definition of "human being" that is likely to surprise students of the Ageless Wisdom as well as main-stream scientists.