Book excerpt: The Copernican Principle states that humankind is an insignificant assemblage of chemical scum living on an accidental planet in a suburb of a purposeless universe. Many prominent scientists, including Nobel laureate physicists, have questioned this scurrilous principle, which has led physicists to propose the Anthropic Principle. This principle posits a purposeful link between the structure of the universe and the existence of humankind and its specialness. The numerous features of the universe are so freakishly fine-tuned for the existence of intelligent life that physicists are beginning to come to grips with the notion that our universe is profoundly purposeful and that there is a powerful and incredibly intelligent Mind behind it all.