yourselves by understanding the powers of thought and turning them to the object you desire to obtain. There are many ways in which this may be done, and many rules you may learn for your guidance. Those rules may be summed up under two heads: clear and strenuous thinking, discipline for the bodies that you are trying to evolve; and also, I should add, for the body below them in evolution. Those are the two great laws for the safe evolution of these so-called psychic powers, what I call the powers of the consciousness on the astral and mental planes. There must be a discipline for the bodies, for you have to choose the material which will serve you best in the work you are doing out of the innumerable combinations of matter with which Nature presents you. You must choose the combinations that will serve your purpose, which you can utilise in the building of the organs of sense on plane after plane. Just as really as the man who is a drunkard will injure his nervous system by his excesses, and by supplying coarse and over-active compounds will injure the physical body, so making it a less useful instrument for the man--as any excess, not only drunkenness, but gluttony, profligacy, and so on--as these injure the physical body as an instrument of consciousness, and to have full and perfect consciousness here we must train, discipline, build up our body with knowledge and with self-control, so also is that true on the higher planes. A regimen is necessary when you are dealing with the organisation of the subtler matter of the astral and mental worlds, for you cannot build up your physical body out of the coarser combinations of matter on the physical, and have finer combinations on the astral and mental. The bodies have to match each other. They have to correspond with each other; and as you find all sorts of combinations related the one to the other on every plane, you must choose your combinations on the physical if you desire to choose them also on the astral and mental. You cannot make your physical body coarse, and organise the astral and mental bodies for the finer purposes of the man; and you must settle that in your minds if you wish to try to develop these higher powers of consciousness. Not only because if you gather together the coarser materials of the astral world, you will find yourself hampered by them in the higher expression of consciousness, but also because the presence of these combinations in you exposes you to a number of dangers on the astral plane. The purer the elements of your astral body, the safer you are in your earlier wanderings on that plane. It is important to mention this, because in some of the schools of thought which are trying only to develop astral powers, you will find that they deliberately use other methods in order to make their astral body active. Many schools of the "left hand path" in India will use spirits, wines, meats of all sorts, in order to bring about a certain astral condition, and they