The Spirits' Book
Book Three - Moral Laws
Chapter IV - III. Law of Reproduction
Succession and Development of the Human Race
690. From a purely physical standpoint, are the bodies of humans today a unique creation or are they advanced versions of the bodies of the prehistoric races?
“The origin of the various human races is lost in the night of time. However as they all belong to the human family, they have formed alliances with one another and produced new types, regardless of the prehistoric root of each.”