In this chapter, the authors talk about the story of two phrases, human nature and human being, by comparing the man described by science with the man described by the Christian Church. They describe that a true study of man must be a study in God; it must be anthropology in God. The authors begin with simple truths of feeling, thinking, and faith that must be accounted by a study of man. They aims to use feeling as a measure and test of one's ideas about man. The Church is faith in human exceptionalism; faith in the God that created man uniquely in His image; faith in human being. Man is being to know by the heart, in acts of creation, in acts of love. The authors attest that the word of science and the word of God are very different words to live by.