One who dies in advanced years will pass more rapidly through the astral world than he would have done had he died in the full strength of manhood. As the years accumulate the emotions that vivify the lowest grades of astral matter are not so much in evidence and the matter in which they are expressed loses its vitality. That is an additional reason why it is desirable to live to old age in the physical world.
The hold that the material world has upon the mind is one of the causes which greatly prolong existence in the astral world. Some people give their time and thought so exclusively to material things that after they lose the physical body they cannot keep the mind away from the life that lies behind them. This difficulty does not necessarily arise wholly from having given one's energies entirely to personal ambition and material accumulation. Sometimes the ruler of a country is so determined to still manage affairs, as far as possible, that this vivid interest in the physical world stretches out the period of astral life most unfortunately.
Ordinarily one's sojourn in the astral world is comparatively short, if we measure it in the terms of physical life. A person who has lived here seventy years may have thirty or forty years on the astral plane. But that will depend not only upon how he lived the physical life just closed but also upon his general position in human evolution. A savage of low type would have a comparatively long astral life while a man at the higher levels of civilization would have a comparatively short period there, while the man in the lower levels of civilized life might be said to come in at about midway between the two. But it must be remembered that these are very general estimates and that among civilized peoples individuals differ enormously. Some will pass very slowly and, so far as lower levels are concerned, painfully, through astral life, while the sojourn of others there is measured in minutes, and they pass happily and almost instantaneously from physical death to the heaven world. But such people are the exception, not the rule.
Communication with those who have passed on into the astral world is possible, but not always desirable, for a number of reasons. As an evidence of the continuity of consciousness in the hands of the scientific investigator, such communications have been of the greatest value. As a consolation to those who have thus come again in touch with dead friends such messages have been of inestimable value to the bereaved, particularly when they have been received in the privacy of the family circle by some of its members. For a time those who have lost the physical body are usually within easy reach through the usual methods employed for the purpose and perhaps no harm is done by such communications unless they arouse anew the grief of those who have been left behind and thus greatly depress the departed. But after the living dead get farther along, and are practically out of touch with the material world, then directing their attention backward may be positively injurious to them. For that reason careful students of the occult seldom seek to obtain messages, or at least do it with proper consideration for all the circumstances of the particular case.