The earth is at the same time mother, She is mother of all that is natural, mother of all that is human. She is mother of all, for contained in her are the seeds of all. The earth of human kind contains all moistness, all verdancy, all germinating power. It is in so many ways fruitful. All creation comes from it. Yet it forms not only the basic raw material for humankind, but also the substance of the incarnation of God's son.