Book excerpt: Our future can turn out in one of several ways, and it is humanity that must make the decision of which one it will be. Only one will be truly to mankind's advantage. Why this is so is the thrust of Our Ending Dark Age. Its premise is that when humans began using tools, we began to separate from nature. The long process of going from nature to separating from nature is our Dark Age, or Age of Adjustment. Mankind's best future is that wherein he is completely separate from nature. Why this is so is analyzed in Our Ending Dark Age as humankind's biology, psychology, evolution, economics, education, entrepreneurship and society are examined. This is done using the platform of history as the tie that holds all of these seemingly divergent subjects together. The role religion and opinion play in deciding the course of civilization is examined. The reader is then taken on an excursion that begins with the cellular basis of human anatomy, the meaning of Soul and Spirit, and traces history from our hunter-gatherer days to the magnificent future that awaits us if we put our minds to it.