Sri Aurobindo
Letters of Sri Aurobindo
Volume III - Part 4
I have said that the most decisive way for the Peace or the Silence to come is by a descent from above. In fact, in reality 
though not always in appearance, that is how they always come;– not in appearance always, because the sadhak is not always conscious of the process; he feels the peace settling in him or at least manifesting, but he has not been conscious how and whence it came. Yet it is the truth that all that belongs to the higher consciousness comes from above, not only the spiritual peace and silence, but the Light, the Power, the Knowledge, the higher seeing and thought, the Ananda come from above. It is also possible that up to a certain point they may come from within, but this is because the psychic being is open to them directly and they come first there and then reveal themselves in the rest of the being from the psychic or by its coming into the front. A disclosure from within or a descent from above are the two sovereign ways of the Yoga-siddhi. An effort of the external surface mind or emotions, a tapasya of some kind may seem to build up something of these things, but the results are usually uncertain and fragmentary compared to the result of the two radical ways. That is why in this Yoga we insist always on an “opening” – an opening inwards of the inner mind, vital, physical to the inmost part of us, the psychic, and an opening upwards to what is above the mind – as indispensable for the fruits of the sadhana.
The underlying reason for this is that this little mind, vital and body which we call ourselves is only a surface movement and not our “self” at all. It is an external bit of personality put forward for one brief life and for the play of the Ignorance. It is equipped with an ignorant mind stumbling about in search of fragments of truth, an ignorant vital rushing about in search of fragments of pleasure, an obscure and mostly subconscious physical receiving the impacts of things and suffering rather than possessing a resultant pain or pleasure. All that is accepted until the mind gets disgusted and starts looking about for the real Truth of itself and things, the vital gets disgusted and begins wondering whether there is not such a thing as real bliss and the physical gets tired and wants liberation from itself and its pains and pleasures. Then it is possible for this little ignorant bit of surface personality to get back to its real Self and with it to these 
greater things – or else to extinction of itself, Nirvana.
The real Self is not anywhere on the surface but deep within and above. Within is the soul supporting an inner mind, inner vital, inner physical in which there is a capacity for universal wideness and with it for the things now asked for,– direct contact with the Truth of self and things, taste of a universal bliss, liberation from the imprisoned smallness and sufferings of the gross physical body. Even in Europe the existence of something behind the surface is now very frequently admitted, but its nature is mistaken and it is called subconscient or subliminal, while really it is very conscious in its own way and not subliminal but only behind the veil. It is, according to our psychology, connected with the small outer personality by certain centres of consciousness of which we become aware by Yoga. Only a little of the inner being escapes through these centres into the outer life, but that little is the best part of ourselves and responsible for our art, poetry, philosophy, ideals, religious aspirations, efforts at knowledge and perfection. But the inner centres are, for the most part, closed or asleep – to open them and make them awake and active is one aim of Yoga. As they open, the powers and possibilities of the inner being also are aroused in us; we awake first to a larger consciousness and then to a cosmic consciousness; we are no longer little separate personalities with limited lives but centres of a universal action and in direct contact with cosmic forces. Moreover, instead of being unwilling playthings of the latter, as is the surface person, we can become to a certain extent conscious and masters of the play of nature – how far this goes depending on the development of the inner being and its opening upward to the higher spiritual levels. At the same time the opening of the heart centre releases the psychic being which proceeds to make us aware of the Divine within us and of the higher Truth above us.
For the highest spiritual Self is not even behind our personality and bodily existence but is above it and altogether exceeds it. The highest of the inner centres is in the head, just as the deepest is the heart; but the centre which opens directly to the Self is above the head, altogether outside the physical body, 
in what is called the subtle body, sūkṣma śarīra. This Self has two aspects and the results of realising it correspond to these two aspects. One is static, a condition of wide peace, freedom, silence: the silent Self is unaffected by any action or experience; it impartially supports them but does not seem to originate them at all, rather to stand back detached or unconcerned, udāsīna. The other aspect is dynamic and that is experienced as a cosmic Self or Spirit which not only supports but originates and contains the whole cosmic action – not only that part of it which concerns our physical selves but also all that is beyond it, this world and all other worlds, the supraphysical as well as the physical ranges of the universe. Moreover, we feel the Self as one in all, but also we feel it as above all, transcendent, surpassing all individual birth or cosmic existence. To get into the universal Self – one in all – is to be liberated from ego; ego either becomes a small instrumental circumstance in the consciousness or disappears from our consciousness altogether. That is the extinction or nirvāṇa of the ego. To get into the transcendent self above all makes us capable of transcending altogether even the cosmic consciousness and action – it can be the way to that complete liberation from the world-existence which is called also extinction, laya, mokṣa, Nirvana.
It must be noted however that the opening upward does not necessarily lead to peace, silence and Nirvana only. The sadhak becomes aware not only of a great, eventually an infinite peace, silence, wideness above us, above the head as it were and extending into all physical and supraphysical space, but also he can become aware of other things – a vast Force in which is all power, a vast Light in which is all knowledge, a vast Ananda in which is all bliss and rapture. At first they appear as something essential, indeterminate, absolute, simple, kevala; a Nirvana into any of these things seems possible. But we can come to see too that this Force contains all forces, this Light all lights, this Ananda all joy and bliss possible. And all this can descend into us. Any of them and all of them can come down, not peace alone; only the safest is to bring down first an absolute calm and peace for that makes the descent of the 
rest more secure; otherwise it may be difficult for the external nature to contain or bear so much Force, Light, Knowledge or Ananda. All these things together make what we call the higher, spiritual or divine consciousness. The psychic opening through the heart puts us primarily into connection with the individual Divine, the Divine in his inner relations with us; it is especially the source of love and bhakti. This upward opening puts us into direct relation with the whole Divine and can create in us the divine consciousness and a new birth or births of the spirit.
For when the Peace is established, this higher or Divine Force from above can descend and work in us. It descends usually first into the head and liberates the inner mind centres, then into the heart centre and liberates fully the psychic and emotional being, then into the navel and other vital centres and liberates the inner vital, then into the Muladhara and below and liberates the inner physical being. It works at the same time for perfection as well as liberation; it takes up the whole nature part by part and deals with it, rejecting what has to be rejected, sublimating what has to be sublimated, creating what has to be created. It integrates, harmonises, establishes a new rhythm in the nature. It can bring down too a higher and yet higher force and range of the higher Nature until, if that be the aim of the sadhana, it becomes possible to bring down the supramental force and existence. All this is prepared, assisted, farthered by the work of the psychic being in the heart centre; the more it is open, in front, active, the quicker, safer, easier the working of the Force can be. The more love and bhakti and surrender grow in the heart, the more rapid and perfect becomes the evolution of the sadhana. For the descent and transformation imply at the same time an increasing contact and union with the Divine.
That is the fundamental rationale of the sadhana. It will be evident that the two most important things here are the opening of the heart centre and the opening of the mind centres to all that is behind and above them. For the heart opens to the psychic being and the mind centres open to the higher consciousness and the nexus between the psychic being and the higher consciousness is the principal means of the siddhi. The 
first opening is effected by a concentration in the heart, a call to the Divine to manifest within us and through the psychic to take up and lead the whole nature. Aspiration, prayer, bhakti, love, surrender are the main supports of this part of the sadhana – accompanied by a rejection of all that stands in the way of what we aspire for. The second opening is effected by a concentration of the consciousness in the head (afterwards, above it) and an aspiration and call and a sustained will for the descent of the divine Peace, Power, Light, Knowledge, Ananda into the being – the Peace first or the Peace and Force together. Some indeed receive Light first or Ananda first or some sudden pouring down of knowledge. With some there is first an opening which reveals to them a vast infinite Silence, Force, Light or Bliss above them and afterwards either they ascend to that or these things begin to descend into the lower nature. With others there is either the descent, first into the head, then down to the heart level, then to the navel and below and through the whole body, or else an inexplicable opening – without any sense of descent – of peace, light, wideness or power or else a horizontal opening into the cosmic consciousness or, in a suddenly widened mind, an outburst of knowledge. Whatever comes has to be welcomed – for there is no absolute rule for all,– but if the peace has not come first, care must be taken not to swell oneself in exultation or lose the balance. The capital movement however is when the Divine Force or Shakti, the power of the Mother comes down and takes hold, for then the organisation of the consciousness begins and the larger foundation of the Yoga.
The result of the concentration is not usually immediate – though to some there comes a swift and sudden outflowering; but with most there is a time longer or shorter of adaptation or preparation, especially if the nature has not been prepared already to some extent by aspiration and tapasya. The coming of the result can sometimes be aided by associating with the concentration one of the processes of the old Yogas. There is the Adwaita process of the way of knowledge – one rejects from oneself the identification with the mind, vital, body, saying continually “I am not the mind”, “I am not the vital”, “I am not the 
body”, seeing these things as separate from one’s real self – and after a time one feels all the mental, vital, physical processes and the very sense of mind, vital, body becoming externalised, an outer action, while within and detached from them there grows the sense of a separate self-existent being which opens into the realisation of the cosmic and transcendent Spirit. There is also the method – a very powerful method – of the Sankhyas, the separation of the Purusha and the Prakriti. One enforces on the mind the position of the Witness – all action of mind, vital, physical becomes an outer play which is not myself or mine, but belongs to Nature and has been enforced on an outer me. I am the witness Purusha who am silent, detached, not bound by any of these things. There grows up in consequence a division in the being; the sadhak feels within him the growth of a calm silent separate consciousness which feels itself quite apart from the surface play of the mind and the vital and physical Nature. Usually when this takes place, it is possible very rapidly to bring down the peace of the higher consciousness and the action of the higher Force and the full march of the Yoga. But often the Force itself comes down first in response to the concentration and call and then, if these things are necessary, it does them and uses any other means or process that is helpful or indispensable.
One thing more. In this process of the descent from above and the working it is most important not to rely entirely on oneself, but to rely on the guidance of the Guru and to refer all that happens to his judgment and arbitration and decision. For it often happens that the forces of the lower nature are stimulated and excited by the descent and want to mix with it and turn it to their profit. It often happens too that some Power or Powers undivine in their nature present themselves as the Supreme Lord or as the Divine Mother and claim the being’s service and surrender. If these things are accepted, there will be an extremely disastrous consequence. If indeed there is the assent of the sadhak to the Divine working alone and the submission or surrender to that guidance, then all can go smoothly. This assent and a rejection of all egoistic forces or forces that appeal to the ego are the safeguard throughout the sadhana. But the 
ways of Nature are full of snares, the disguises of the ego are innumerable, the illusions of the Powers of Darkness, Rakshasi Maya, are extraordinarily skilful; the reason is an insufficient guide and often turns traitor; vital desire is always with us tempting to follow any alluring call. This is the reason why in this Yoga we insist so much on what we call samarpaṇa – rather inadequately rendered by the English word surrender. If the heart centre is fully opened and the psychic is always in control, then there is no question; all is safe. But the psychic can at any moment be veiled by a lower upsurge. It is only a few who are exempt from these dangers and it is precisely those to whom surrender is easily possible. The guidance of one who is himself by identity or represents the Divine is in this difficult endeavour imperative and indispensable.
What I have written may help you to get some clear idea of what I mean by the central process of the Yoga. I have written at some length but, naturally, could cover only the fundamental things. Whatever belongs to circumstance and detail must arise as one works out the method, or rather as it works itself out,– for the last is what usually happens when there is an effective beginning of the action of the sadhana.