Louis Leakey was one of the pioneering researchers that produced evidence allowing us to understand the course of human evolution, both in terms of the various, now extinct, species involved, and that Africa was the place where humankind first appeared. While he was not always correct in his assumptions or interpretations, Leakey's impact in this area is tremendous. In part this is due to his own findings and persistent belief in the distinct origin of humankind. Additionally, though, Louis Leakey inspired his own family—his wife Mary, their son Richard, and Richard's wife and daughter—to continue this research.
Beyond his own family, Leakey also initiated the pioneering research of three primatologists—Jane Goodall, Dian Fossey, and Biruté Galdikas—whose work has led to significant advances in our understanding of the great apes, the closest relatives to human beings, and to their protection and preservation. Such work preserving the natural environment for these precious species directly contributes to the establishment of the "Third Blessing" of dominion over the created world. Thus, Leakey's efforts have greatly increased our understanding of the development of the external form of human beings, through our most closely related species, both extinct and surviving.