1. Single-mindedness. The first requisite is that we shall have recognized the great work which the Masters would have us do, and that it shall be for us the one great interest of our lives. We must learn to distinguish not only between useful and useless work, but between the different kinds of useful work, so that we may each devote ourselves to the very highest of which we are capable, and not fritter away our time in labouring at something which, however good it may be for the man who cannot yet do anything better, is unworthy of the knowledge and capacity which should be ours as Theosophists. A man who wishes to be considered eligible for employment on higher planes must begin by doing the utmost that lies in his power in the way of definite work for Theosophy down here.

Of course I do not for a moment mean that we are to neglect the ordinary duties of life. We should certainly do well to undertake no new worldly duties of any sort, but those which we have already bound upon our shoulders have become a kârmic obligation which we have no right to neglect. Unless we have done to the full the duties which karma has laid upon us we are not free for the higher work. But this higher work must nevertheless be to us the one thing really worth living for—the constant background of a life which is consecrated to the service of the Masters of Compassion.

2. Perfect self-control. Before we can be safely trusted with the wider powers of the astral life, we must have ourselves perfectly in hand. Our temper, for example, must be thoroughly under control, so that nothing that we may see or hear can cause real irritation in us, for the consequences of such irritation would be far more serious on that plane than on this. The force of thought is always an enormous power, but down here it is reduced and deadened by the heavy physical brain-particles which it has to set in motion. In the astral world it is far freer and more potent, and for a man with fully-awakened faculty to feel anger against a person there would be to do him serious and perhaps even fatal injury.

Not only do we need control of temper, but control of nerve, so that none of the fantastic or terrible sights that we may encounter may be able to shake our dauntless courage. It must be remembered that the pupil who awakens a man upon the astral plane incurs thereby a certain amount of responsibility for his actions and for his safety, so that unless his neophyte had courage to stand alone the whole of the older worker’s time would be wasted in hovering round to protect him, which it would be manifestly unreasonable to expect.

It is to make sure of this control of nerve, and to fit them for the work that has to be done, that candidates are always made, now as in days of old, to pass what are called the tests of earth, water, air and fire.

In other words, they have to learn with that absolute certainty that comes not by theory, but by practical experience, that in their astral bodies none of these elements can by any possibility be hurtful to them—that none can oppose any obstacle in the way of the work which they have to do.

In this physical body we are fully convinced that fire will burn us, that water will drown us, that the solid rock forms an impassable barrier to our progress, that we cannot with safety launch ourselves unsupported into the ambient air. So deeply is this conviction engrained in us that it costs most men a good deal of effort to overcome the instinctive action which follows from it, and to realize that in the astral body the densest rock offers no impediment to their freedom of motion, that they may leap with impunity from the highest cliff, and plunge with the most absolute confidence into the heart of the raging volcano or the deepest abysses of the fathomless ocean.

Yet until a man knows this—knows it sufficiently to act upon his knowledge instinctively and confidently—he is comparatively useless for astral work, since in emergencies that are constantly arising he would be perpetually paralyzed by imaginary disabilities. So he has to go through his tests, and through many another strange experience—to meet face to face with calm courage the most terrifying apparitions amid the most loathsome surroundings—to show in fact that his nerve may be thoroughly trusted under any and all of the varied groups of circumstances in which he may at any moment find himself.

Further, we need control of mind and of desire; of mind, because without the power of concentration it would be impossible to do good work amid all the distracting currents of the astral plane; of desire, because in that strange world to desire is very often to have, and unless this part of our nature were well controlled we might perchance find ourselves face to face with creations of our own of which we should be heartily ashamed.

3. Calmness. This is another most important point—the absence of all worry and depression. Much of the work consists in soothing those who are disturbed, and cheering those who are in sorrow; and how can a helper do that work if his own aura is vibrating with constant fuss and worry, or grey with the deadly gloom that comes from perpetual depression? Nothing is more hopelessly fatal to occult progress or usefulness than our nineteenth-century habit of ceaselessly worrying over trifles—of eternally making mountains out of molehills. Many of us simply spend our lives in magnifying the most absurd trivialities—in solemnly and elaborately going to work to make ourselves miserable about nothing.