13. The employments of spirits are proportioned to their advancement, to the knowledge they possess, to their capacities, to their experience, and to the degree of confidence reposed in them by the sovereign Master. In the spirit-world, there is no privilege, no favor that is not the consequence of personal merit; all the arrangements of that higher world are weighed in the scales of absolute justice. The most important missions are confided only to those who are known by God to be, at once, able to fulfill them worthily, and incapable of betraying them or of failing in the accomplishment of the tasks committed to them. While, under the very eye of God, the most worthy that compose the Supreme Council of the Universe are charged with the direction of the various solar systems, and others are charged with the direction of a single planet. After these, in the order of their personal advancement and hierarchical rank, are the spirits who are entrusted with the direction of a single nation, of a single family, of a single individual, are charged to push forward some special branch of progress, or to supervise the various operations of nature, all of which are carried out, to the minutest details, in the work of creation. In the vast and harmonious unity of creation, there are occupations for all varieties and degrees of capacity, of aptitude, of devotion; occupations that are solicited with ardent desire and accepted with joy and gratitude, because devotion and service are means of advancement for the spirits who aspire to the ineffable felicity of the supreme degree.