51:6.1 On most of the inhabited worlds the Gardens of Eden remain as superb cultural centers and continue to function as the social patterns of planetary conduct and usage age after age. Even in early times when the violet peoples are relatively segregated, their schools receive suitable candidates from among the world races, while the industrial developments of the garden open up new channels of commercial intercourse. Thus do the Adams and Eves and their progeny contribute to the sudden expansion of culture and to the rapid improvement of the evolutionary races of their worlds. And all of these relationships are augmented and sealed by the amalgamation of the evolutionary races and the sons of Adam, resulting in the immediate upstepping of biologic status, the quickening of intellectual potential, and the enhancement of spiritual receptivity.
51:6.2 On normal worlds the garden headquarters of the violet race becomes the second center of world culture and, jointly with the headquarters city of the Planetary Prince, sets the pace for the development of civilization. For centuries the city headquarters schools of the Planetary Prince and the garden schools of Adam and Eve are contemporary. They are usually not very far apart, and they work together in harmonious co-operation.
51:6.3 Think what it would mean on your world if somewhere in the Levant there were a world center of civilization, a great planetary university of culture, which had functioned uninterruptedly for 37,000 years. And again, pause to consider how the moral authority of even such an ancient center would be reinforced were there situated not far distant still another and older headquarters of celestial ministry whose traditions would exert a cumulative force of 500,000 years of integrated evolutionary influence. It is custom which eventually spreads the ideals of Eden to a whole world.
51:6.4 The schools of the Planetary Prince are primarily concerned with philosophy, religion, morals, and the higher intellectual and artistic achievements. The garden schools of Adam and Eve are usually devoted to practical arts, fundamental intellectual training, social culture, economic development, trade relations, physical efficiency, and civil government. Eventually these world centers amalgamate, but this actual affiliation sometimes does not occur until the times of the first Magisterial Son.
51:6.5 The continuing existence of the Planetary Adam and Eve, together with the pure-line nucleus of the violet race, imparts that stability of growth to Edenic culture by virtue of which it comes to act upon the civilization of a world with the compelling force of tradition. In these immortal Material Sons and Daughters we encounter the last and the indispensable link connecting God with man, bridging the almost infinite gulf between the eternal Creator and the lowest finite personalities of time. Here is a being of high origin who is physical, material, even a sex creature like Urantia mortals, one who can see and comprehend the invisible Planetary Prince and interpret him to the mortal creatures of the realm, for the Material Sons and Daughters are able to see all of the lower orders of spirit beings; they visualize the Planetary Prince and his entire staff, visible and invisible.
51:6.6 With the passing of centuries, through the amalgamation of their progeny with the races of men, this same Material Son and Daughter become accepted as the common ancestors of mankind, the common parents of the now blended descendants of the evolutionary races. It is intended that mortals who start out from an inhabited world have the experience of recognizing seven fathers: