Book excerpt: What is the meaning of good? The word good, embodies a concept that enables me(everybody) to differentiate everything that surrounds me in life. Good is the quantity of the concept `s quality. The word quality has not a scientific definition .Everybody interpret this word according his mind (empirically). For the set of people the concept and the word quality dos not exist. The lack of scientific definition for the quality is the reason of: The political, economical and social sciences confusion and economic crises. In this book the reader will find the definition of the basic concepts of goods like: Goodness of goods (quality of goods), good goods (quality quantity of goods),etc. And the work concepts like: The work quality, the work quantity of quality, the work change..., goodtime of the work, the work goodtime quantity. The scientific definition and measurement of these concepts is base of a conceptual revolution on theory and practice of politic, economic and social life.