30:4.23

There are three orders of student spirits in accordance with their sojourn upon the minor sector, major sectors, and the superuniverse headquarters worlds of spirit progression. As morontia ascenders studied and worked on the worlds of the local universe, so spirit ascenders continue to master new worlds while they practice at giving out to others that which they have imbibed at the experiential founts of wisdom. But going to school as a spirit being in the superuniverse career is very unlike anything that has ever entered the imaginative realms of the material mind of man.