In the astral life some people linger long on the lower levels while others know them not at all, but awaken to the blissful consciousness of the higher subdivisions. Nature is everywhere consistent, grouping together people of a kind. It is, however, the manner in which one lives during physical life that determines his happiness or sorrow after death. The astral body, the seat of the emotions, is, like the physical body, constantly changing the matter that composes it. An emotion of any kind expresses itself as a vibration in the matter of the astral body. If it is a base emotion, such as anger, hatred, lust or cruelty, it throws into vibration the grossest of the astral body's matter, for only in that can it be expressed. If it is an exalted emotion, such as love, sympathy, devotion, courage or benevolence, it affects only the rarer grades of astral matter, for in them only can such feeling be expressed. With most people there is a constant mingling of a wide range of emotions, with a gain in one direction and a loss in another. One who fortunately understands the law of emotional cause and effect may make absolutely certain of a comfortable sojourn upon the astral plane after death. He would make it a rule to watch his emotions and control them, knowing that each time he indulged a gross one the vibration set up in his astral body would strengthen and vivify the grossest grade of matter in it, while pure and exalted emotions would strengthen the higher grades. Ultimately, the grossest grade, becoming atrophied for the lack of activity, would drop away from him.