The astral life is the result of all feelings which have in them the element of self. If they have been directly selfish, they bring him into conditions of great unpleasantness in the astral world; if, though tinged with thoughts of self, they have been good and kindly, they bring him a comparatively pleasant though still limited astral life. Such of his thoughts and feelings as have been entirely unselfish produce their results in his life in the mental world; therefore that life in the mental, world cannot be other than blissful. The astral life, which the man has made for himself either miserable or comparatively joyous, corresponds to what Christians call purgatory; the lower mental life, which is always entirely happy, is what is called heaven.

Man makes for himself his own purgatory and heaven, and these are not planes, but states of consciousness. Hell does not exist; it is only a figment of the theological imagination; but a man who lives foolishly may make for himself a very unpleasant and long enduring purgatory. Neither purgatory nor heaven can ever be eternal, for a finite cause cannot produce an infinite result. The variations in individual cases are so wide that to give actual figures is somewhat misleading. If we take the average man of what is called the lower middle class, the typical specimen of which would be a small shopkeeper or shop-assistant, his average life in the astral world would be perhaps about forty years, and the life in the mental world about two hundred. The man of spirituality and culture, on the other hand, may have perhaps twenty years of life in the astral world and a thousand in the heaven life. One who is specially developed may reduce the astral life to a few days or hours and spend fifteen hundred years in heaven.

Not only does the length of these periods vary greatly, but the conditions in both worlds also differ widely. The matter of which all these bodies are built is not dead matter but living, and that fact has to be taken into consideration. The physical body is built up of cells, each of which is a tiny separate life animated by the Second Outpouring, which comes forth from the Second Aspect of the Deity. These cells are of varying kinds and fulfil various functions, and all these facts must be taken into account if the man wishes to understand the work of his physical body and to live a healthy life in it.

The same thing applies to the astral and mental bodies. In the cell-life which permeates them there is as yet nothing in the way of intelligence, but there is a strong instinct always pressing in the direction of what is for its development. The life animating the matter of which such bodies are built is upon the outward arc of evolution, moving downwards or outwards into matter, so that progress for it means to descend into denser forms of matter, and to learn to express itself through them. Unfoldment for the man is just the opposite of this; he has already sunk deeply into matter and is now rising out of that towards his source. There is consequently a constant conflict of interests between the man within and the life inhabiting the matter of his vehicles, inasmuch as its tendency is downward, while his is upward.

The matter of the astral body (or rather the life animating its molecules) desires for its evolution such undulations as it can get, of as many different kinds as possible, and as coarse as possible. The next step in its evolution will be to ensoul physical matter and become used to its still slower oscillations; and as a step on the way to that, it desires the grossest of the astral vibrations. It has not the intelligence definitely to plan for these; but its instinct helps it to discover how most easily to procure them.

The molecules of the astral body are constantly changing, as are those of the physical body, but nevertheless the life in the mass of those astral molecules has a sense, though a very vague sense, of itself as a whole—as a kind of temporary entity. It does not know that it is part of a man's astral body; it is quite incapable of understanding what a man is; but it realizes in a blind way that under its present conditions it receives many more waves, and much stronger ones, than it would receive if floating at large in the atmosphere. It would then only occasionally catch, as from a distance, the radiation of man's passions and emotions; now it is in the very heart of them, it can miss none, and it gets them at their strongest. Therefore it feels itself in a good position, and it makes an effort to retain that position. It finds itself in contact with something finer than itself—the matter of the man's mental body; and it comes to feel that if it can contrive to involve that finer something in its own undulations, they will be greatly intensified and prolonged.

Since astral matter is the vehicle of desire and mental matter is the vehicle of thought, this instinct, when translated into our language, means that if the astral body can induce us to think that we want what it wants, it is much more likely to get it. Thus it exercises a slow steady pressure upon the man—a kind of hunger on its side, but for him a temptation to what is coarse and undesirable. If he be a passionate man there is a gentle but ceaseless pressure in the direction of irritability; if he be a sensual man, an equally steady pressure in the direction of impurity.

A man who does not understand this usually makes one of two mistakes with regard to it: either he supposes it to be the prompting of his own nature, and therefore regards that nature as inherently evil, or he thinks of the pressure as coming from outside—as a temptation of an imaginary devil. The truth lies between the two. The pressure is natural, not to the man but to the vehicle which he is using; its desire is natural and right for it, but harmful to the man, and therefore it is necessary that he should resist it. If he does so resist, if he declines to yield himself to the feelings suggested to him, the particles within him which need those vibrations become apathetic for lack of nourishment, and eventually atrophy and fall out from his astral body, and are replaced by other particles, whose natural wave-rate is more nearly in accordance with that which the man habitually permits within his astral body.

This gives the reason for what are called promptings of the lower nature during life. If the man yields himself to them, such promptings grow stronger and stronger until at last he feels as though he could not resist them, and identifies himself with them—which is exactly what this curious half-life in the particles of the astral body wants him to do.

At the death of the physical body this vague astral consciousness is alarmed. It realizes that its existence as a separated mass is menaced, and it takes instinctive steps to defend itself and to maintain its position as long as possible. The matter of the astral body is far more fluidic than that of the physical, and this consciousness seizes upon its particles and disposes them so as to resist encroachment. It puts the grossest and densest upon the outside as a kind of shell, and arranges the others in concentric layers, so that the body as a whole may become as resistant to friction as its constitution permits, and may therefore retain its shape as long as possible.