The second subdivision is a shade less material than the third, for if the latter is the summerland of the spiritualists, the former is the material heaven of the more ignorantly orthodox; while the first or highest level appears to be the special home of those who during life have devoted themselves to materialistic but intellectual pursuits, following them not for the sake of benefiting their fellow men, but either from motives of selfish ambition or simply for the sake of intellectual exercise. All these people are perfectly happy. Later on they will reach a stage when they can appreciate something much higher, and when that stage comes they will find the higher ready for them. In this astral life people of the same nation and of the same interest tend to keep together, precisely as they do here. The religious people, for example, who imagine for themselves a material heaven, do not at all interfere with men of other faiths whose ideas of celestial joy are different. There is nothing to prevent a Christian from drifting into the heaven of the Hindu or the Muhammadan, but he is little likely to do so, because his interests and attractions are all in the heaven of his own faith, along with friends who have shared that faith with him. This is by no means the true heaven described by any of the religions, but only a gross and material misrepresentation of it; the real thing will be found when we come to consider the mental world. The dead man who has not permitted the rearrangement of the matter of his astral body is free of the entire world, and can wander all over it at will, seeing the whole of whatever he examines, instead of only a part of it as the others do. He does not find it inconveniently crowded, for the astral world is much larger than the surface of the physical earth, while its population is somewhat smaller, because the average life of humanity in the astral world is shorter than the average in the physical. Not only the dead, however, are the inhabitants of this astral world, but always about one-third of the living as well, who have temporarily left their physical bodies behind them in sleep. The astral world has also a great number of non-human inhabitants, some of them far below the level of man, and some considerably above him. The nature-spirits form an enormous kingdom, some of whose members exist in the astral world, and make a large part of its population. This vast kingdom exists in the physical world also, for many of its orders wear etheric bodies and are only just beyond the range of ordinary physical sight. Indeed, circumstances not infrequently occur under which they can be seen, and in many lonely mountain districts these appearances are traditional among the peasants, by whom they are commonly spoken of as fairies, good people, pixies or brownies.