Sri Aurobindo
Letters of Sri Aurobindo
Volume I - Part 5
Fragment ID: 10823
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An activity on
the astral plane in contact with the astral Forces attended by a leaving of the body is not a spiritual aim but belongs to the province of occultism. It is not a part of the aim of Yoga. Also fasting is not permissible in the Asram, as its practice is more often harmful than helpful to the spiritual endeavour.
This aim suggested to you seems to be part of a seeking for occult powers; such a seeking is looked on with disfavour for the most part by spiritual teachers in India because it belongs to the inferior planes and usually pushes the seeker on a path which 
may lead him very far from the Divine. Especially, a contact with the forces and beings of the astral (or, as we term it, the vital) plane is attended with great dangers. The beings of this plane are often hostile to the true aim of spiritual life and establish contact with the seeker and offer him powers and occult experiences only in order that they may lead him away from the spiritual path or else that they may establish their own control over him or take possession of him for their own purpose. Often, representing themselves as divine powers, they mislead, give erring suggestions and impulsions and pervert the inner life. Many are those who, attracted by these powers and beings of the vital plane, have ended in a definitive spiritual fall or in mental and physical perversion and disorder. One comes inevitably into contact with the vital plane and enters into it in the expansion of consciousness which results from an inner opening, but one ought never to put oneself into the hands of these beings and forces or allow oneself to be led by their suggestions and impulsions. This is one of the chief dangers of the spiritual life and to be on one’s guard against it is a necessity for the seeker if he wishes to arrive at his goal. It is true that many supraphysical or supernormal powers come with the expansion of the consciousness in Yoga; to rise out of the body consciousness, to act by subtle means on the supraphysical planes etc. are natural activities for the Yogi. But these powers are not sought after, they come naturally, and they have not the astral character. Also, they have to be used on purely spiritual lines, that is by the Divine Will and the Divine Force, as an instrument, but never as an instrumentation of the forces and beings of the vital plane. To seek their aid for such powers is a great error.
Prolonged fasting may lead to an excitation of the nervous being which often brings vivid imaginations and hallucinations that are taken for true experiences; such fasting is frequently suggested by the vital Entities because it puts the consciousness into an unbalanced state which favours their designs. It is therefore discouraged here. The rule to be followed is that laid down by the Gita which says that “Yoga is not for one who eats too much or who does not eat”; a moderate use of food sufficient 
for the maintenance and
health and strength of the body.
There is no brotherhood of the kind you describe in India. There are Yogis who seek to acquire and practise occult powers but it is as individuals learning from an individual Master. Occult associations, lodges, brotherhoods for such a purpose as described by European occultists are not known in Asia.
As regards secrecy, a certain discretion or silence about the instructions of the Guru and one’s own experiences is always advisable, but an absolute secrecy or making a mystery of these things is not. Once a Guru is chosen, nothing must be concealed from him. The suggestion of absolute secrecy is often a trick of the astral Powers to prevent the seeking for enlightenment and succour.
1 SABCL, volume 22: of
2 SABCL, volume 22; Letters of Sri Aurobindo. 4 Ser.: of
Current publication:
Sri Aurobindo. Letters on Yoga. I // CWSA.- Volume 28. (≈ 22 vol. of SABCL).- Pondicherry: Sri Aurobindo Ashram, 2012.- 590 p.
Other publications: