Sri Aurobindo
Letters of Sri Aurobindo
Volume I - Part 2
I do not know what is exactly meant by this phrase.1 It is too vague and limited for a description of the psychic. Antahkarana usually means the mind and vital as opposed to the body – the body being the outer instrument and manaḥ-prāṇa the inner instrument of the soul. By psychic I mean something different from a purified mind and vital. A purified mind and vital are the result of the action of the awakened and liberated psychic being but it is not itself the psychic.
Again it depends on what is meant by Ahambhava. But the psychic is not a “bhava”; it is a being, a Purusha. Ahambhava is a formation of Prakriti, it is not a being or a Purusha. Ahambhava can disappear and yet the Purusha will be there.
By liberated psychic being, I mean that it is no longer obliged to express itself under the conditions of the obscure and ignorant instruments, from behind a veil, but is able to come forward, 
control and change the action of mind and vital and body. Purified and perfected are not epithets that can properly be applied to the psychic – the psychic is always pure and has no positive imperfection. The thing that has to be perfected is its control over the instruments. If it is perhaps sometimes spoken of as purified or perfected, what must be meant is the psychic action in the mind, vital and physical instruments. A purified inner being does not mean a purified psychic, but a purified inner mental, vital and physical. The epithets I used for the psychic were “awakened and liberated”.
Spiritual individuality is rather a vague term and might be variously interpreted. I have written about the psychic being that the psychic is the soul or spark of the Divine Fire supporting the individual evolution on the earth and the psychic being is the soul-consciousness developing itself or rather its manifestation from life to life with the mind, vital and body as its instruments until all is ready for the union with the Divine. I don’t know that I can add anything to that.