The material Earth and the dynamic Earth
The earth, like ourselves, has a material organization and a dynamic organization. In the early history of our race we gave chief attention to physical affairs, but the time came at length when we began to gather together, as we do here today, to exchange the products of our dynamic personalities. I think you will agree that the latter is the greater phase of man. So the physical aspects of the earth have received chief attention thus far; but the time has come, I think, when the study of the earth should turn more largely to the dynamic. Very naturally the outer and more intangible phases of the dynamic earth have received scant attention, either from geologists, concerned primarily with the earth-body itself, or from astronomers, concerned primarily with the more fascinating displays of the distant heavens. The inner, invisible heavens, into which . . .