37:6.2
This training of mind and education of spirit is carried on from the worlds of human origin up through the system mansion worlds and the other spheres of progress associated with Jerusem, on the seventy socializing realms attached to Edentia, and on the four hundred and ninety spheres of spirit progress encircling Salvington. On the universe headquarters itself are numerous Melchizedek schools, the colleges of the Universe Sons, the seraphic universities, and the schools of the Teacher Sons and the Union of Days. Every possible provision is made to qualify the various personalities of the universe for advancing service and improving function. The entire universe is one vast school.