title="[9]"/> or give me a foundation; for the point is that your consciousness, working on the next plane above the one on which the organ of consciousness is being built, is the shaper of that mechanism. To put it concretely: your physical brain is built up from the astral plane, and it is your consciousness working in matter finer than the physical which builds up the brain in the forming child within the limits laid down by karma. Now, that is a general law for healthy evolution. You will see the importance of this law a little further on. Every body which we possess—physical, astral, mental, buḍḍhic—is always built up by consciousness working in the plane next above it; the next plane, or world, is a world very much more "next" than you are next each other sitting here—not far away beyond the stars, removed by great spaces. It is interpenetrating you in every portion of your being. It is only "next" in the sense that the solids, liquids, and gases of your bodies are next each other in the body—not far away, but here. So that the working is of the closest and most intimate kind. Some of you who are students of Theosophical literature will remember that H.P.B. has spoken of all of us as working in the astral consciousness. You will see that you are not working with a physical consciousness in the literal sense of the term, if you think for a moment. How much do you know of the consciousness working in the various cells and tissues of your physical body? Practically nothing, except when you are ill. Only when the body is disorganised do you become conscious of that working. Normally, the motion of your blood, the building up by assimilation of your muscles and nerves, the life of your cells, the protective action of some of the living cells in your body—the "devourers," as they are called—go on without your knowledge, without your thought, without your giving one moment's conscious attention to them. In the Perfect Man, the consciousness of all this is ever present, but in us, imperfect, it is not; we are not yet sufficiently vitalised and unfolded to carry on the whole of our consciousness, with full awareness of all its activities. We are only able to manage a very small part of it, and so have let go the consciousness that keeps at work the physical body, to concentrate ourselves in a higher world, and utilise the nervous mechanism as the apparatus of our thinking. That law obtains, then, all through. If you want to organise and build up your astral body, you can only do it from the mental plane. You must raise your thought to a higher power by concentration, by regular meditation, by deliberately working on the consciousness, before you can raise it to that power from which it shall be able to organise your astral body, as it has already organised your physical body. That is the reason why meditation is necessary in all these things; because without the creative power of thought we cannot organise the body in the world which is nearest to the physical.

Now, supposing that we recognise that our consciousness working in the physical brain, the instrument over which we have complete control, is continually at work contacting the outer world, using the brain as an instrument on which it can play, and continually bringing down from higher worlds impressions which it transmits more or less perfectly to the physical plane, we need not dwell upon our ordinary thinking. Let us take thinking a little more unusual, where the finer part of the brain, its etheric matter, is being more largely vitalised, more definitely used. The powers of the imagination—the creative power—the artistic powers, all creative in their nature, these utilise most the ethers of the brain, and, by working in those, bring into activity the lower and coarser matter of the dense brain. Now, the thought passes from the consciousness through vehicle after vehicle to find its clear expression here. But do you not have many mental impressions that are not clear, not well defined, and yet which impress you deeply, and of which you feel sure? They are of many kinds, and reach you in many ways. What is important to you is simply this for the moment: that being surrounded by the astral and mental worlds, contacts from these are continually touching you, continually causing changes in your consciousness. If your astral body were thoroughly organised like your physical, the impressions made would be clear and sharp like the physical. If your mental body were well organised, the impressions of that plane, the heavenly plane, would be clear and sharp like the physical. But as the astral and mental bodies at this stage of evolution are not well organised, the impressions received by them, causing changes in the consciousness, are vague and indeterminate, and it is these which are generally called "psychic." And when you have a Psychical Research Society, it is not dealing with the ordinary processes of thought, but with those which are not ordinary; and all those things to which it gives many strange names are all workings of the consciousness, in sheaths or bodies of which it has not yet gained the mastery, which it has not yet definitely organised for its purposes. Slowly and gradually they become organised, and strenuous thinking is the method for the astral body, and the working of the pure reason is the method for the mental body. Let us consider with regard to this, whether there is any other way of bringing the astral body and mental body into activity. For you may have noticed that I used the word "normal" evolution, orderly evolution on the lines of natural evolution, always from above. But you may stimulate it from below. It is possible to stimulate the astral body, at least, from the physical plane, but you do it at the cost of higher evolution a little later on, and the reason you can do it is simple enough. In the astral body are all the centres of your senses. You know how after death a man's desires are the same as they were during his physical life. You know how in dreams your desires resemble desires that you may have in your waking consciousness. The centre of all your psychic powers, of your conscious powers, the centres of these are in the astral, and if (especially with your senses, each of which has its own centre in the astral body) you overstrain the physical senses down here, you will get an action on the astral plane, but an unhealthy, because disorderly one, one not going along the line of evolution but trying to create from below instead of from above. None the less, you may have some results, and in the two famous Indian systems for developing the powers of the consciousness, and for unfolding the consciousness itself, you have this recognised, and you read of Râja Yoga and of Hatha Yoga, of the Kingly Yoga and of the Yoga of Effort. The Yoga of Effort is Hatha Yoga, and is practised by physical means and followed by physical effects. The eye is stimulated in certain ways, and the effect of straining the physical eye is to bring about a certain limited kind of clairvoyance. You can gain it in that way by gazing into crystals, and so on. They do stimulate the centre of physical sight, but not the astral; and that is why they cannot go very far. You can get a certain amount of clairvoyance by these means, but you are only expanding your physical sight, and working on centres of the astral body connected with the physical organ of vision, the eye. The true astral sight is an entirely different thing. That comes from a centre of its own in the astral body. It has to be created from the mental body, as the organ of the physical was from the astral. The centre of that sight will be in the mental body and not in the astral, and only the organ of it in the astral body. The method of the Kingly, the Râja Yoga, is always by thought—concentrate, meditate, contemplate, think: by that means, in a healthy,