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 Raja Yoga, is always by thought--concentrate, meditate, contemplate, think: by that means, in a healthy, normal, natural way you will inevitably develop the powers of sight on the astral, as in the course of Nature the powers of sight were developed on the physical plane.

And if you realise that your consciousness is one, building its bodies for its fuller and more complete expression, that you are here in order to become masters of matter instead of its slaves, to become lords of matter, using every organ of matter for knowledge of the world to which that matter belongs, and not to be blinded by it, as we are for so long a time in our climb upwards, then you will see that this natural development of astral powers is inevitable in the course of evolution, and all that you can do is to quicken it, following the line which Nature has traced.

As Nature slowly will evolve in every human being the power of using the astral body as freely as you use the physical body now, so can you quicken the coming of that day for 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.