The book is about the authenticity of the conventional wisdom of nature and nurture. It engages the reader's attention on moments of drawing a line between nature and the environment when establishing which of the two practically manages human beings. The popular belief that environmental forces count most in determining who, why, and what we are is challenged vigorously by this unique book. The author has demonstrated clearly, with modern scientific revelations, that it is, firstly, the content of all organic matters that controls, directs, and supervises our actions; nurture is the second added force. The book emphasizes that human similarities, equalities, and differences do exist because it is the unique biological constitution that gives energy to act. The similarity, equality, and differences among black people and non-black people exist firstly because of the natural contents of body chemistry. The environment plays an insignificant part. The book traces human history from prehistoric times to the present to show the purpose of life, the maintenance of life, and the progress through adaptation and control of our environment. The book concludes that there exists excessive melanin segments in most Negroes' blood chemistry, neurons, and brain organ, compared to those in most nonblacks. This excessive difference in the natural black pigment is responsible for most of the black people's insensitivities in life management and progress based on evolutional human history of life and progress.