804. Why has God not given the same aptitudes to all men?
"All spirits have been created equal by God; but some of them have lived more, and others less, and have consequently acquired more or less development in their past existences. The difference between them lies in their various degrees of experience, and in the training of their will, which constitutes their freedom, and in virtue of which some improve themselves more rapidly; hence the diversity of aptitudes that you see around you. This medley of aptitudes is necessary, in order that every man may concur in working out the designs of Providence, within the limits of the development of his physical and intellectual strength. What one cannot do, another does; and thus each contributes his share of usefulness to the general work. Besides, all the words of the universe being united by solidarity, it is necessary that the inhabitants of the higher worlds, most of which were created before yours, should come and dwell in it, in order to set you an example."
805. Does a spirit, in passing from a higher world to a lower one, preserve, in their integrity, the faculties he had previously acquired?
"Yes; we have already told you that a spirit who has progressed cannot again fall back. He may choose, in his spirit-state, a corporeal envelope more benumbing, or a position more precarious, than those he quits; but all this is so combined as to teach him some new lesson, and thus to aid his future progress."
The diversity of human aptitudes is thus seen to be the result, not of any diversity in the creation of men, but of the various degrees of advancement attained to by the spirits who are incarnated in them. God, then, has not created the inequality of human faculties, but He has permitted spirits of different degrees of development to be thus brought into contact with each other, in order that the more forward may aid the more backward, and also in order that all men, having need of one another's help, may arrive at the practical comprehension of the law of charity that is destined to unite them.