433. We do not study those practical arts, which are so essential to the earth life, such as mechanics, &c.; for we do not stand in need of their applications; our studies being wholly of a mental character, we attend to the fundamental principles only. All the more intellectual branches of the arts and sciences are cultivated in a much more perfect manner than that to which we have been accustomed upon earth. The mind being untrammelled by the gross material body, and having its intellectual energies and perceptions improved, we can by intuition, as it were, more clearly and rapidly perceive and understand the principles and truths on which the sciences are based. We can trace the various relations of each subject, so as to understand its connective importance; a knowledge at which mortals arrive only by a long and tedious process. 434. We are not, for good and wise ends, which in due time will be fully explained, permitted to reveal all our knowledge to those below us, as the consequences of such a procedure would be perilous to the happiness of all, and subversive of order. 435. In addition to our studies we have many other sources of intellectual, moral, and heartfelt enjoyment, from which we derive the most ineffable pleasure: one of which is social reunions and convivial meetings; a coming together of dear friends, brothers, sisters, children and parents; where the liveliest emotion and tenderest affections of our nature are excited, and the fondest and most endearing reminiscences are awakened; where spirit meets in unison with spirit, and heart beats responsive to heart. 436. Yet individuals united by the ties of consanguinity are not always linked together, even here, by the golden chain of love and benevolent affection, since it not unfrequently happens that there is much more harmony existing among those who are not members of the same family. Notwithstanding that persons who were intimately acquainted with each other in the natural world, and those who are akin, may be and often are separated, sometimes for long periods, still they do occasionally meet together; those in the higher degrees and spheres passing to the lower, while those in the latter never ascend to the former till fully prepared for such a transition, agreeably to the fixed and unalterable laws of progression. The periods of such separations vary according to the relative gradations of intellectual and moral qualities in each. 437. The peculiar connections and relations of parents and children, brothers and sisters, and all the minor ties of consanguinity, must be forever maintained, although there may be an indefinite interruption to the harmonious play of their affinities.