The psychic part of us is something that comes direct from the Divine and is in touch with the Divine. In its origin it is the nucleus pregnant with the divine possibilities that supports this lower triple manifestation of mind, life and body. There is this divine element in all living beings, but it stands hidden behind the ordinary consciousness, is not at first developed and, even when developed, is not always or often in the front; it expresses itself, so far as the imperfection of the instruments allows, by their means and under their limitations. It grows in the consciousness by Godward experience, gaining strength every time there is a higher movement in us, and, finally, by the accumulation of these deeper and higher movements, there is developed a psychic individuality, -that which we call usually the psychic being. It is always this psychic being that is the real, though often the secret cause of man's turning to the spiritual life and his greatest help in it. It is therefore that which we have to bring from behind to the front in the yoga.
   The word 'soul', as also the word 'psychic', is used very vaguely and in many different senses in the English language. More often than not, in ordinary parlance, no clear  distinction is made between mind and soul and often there is an even more serious confusion, for the vital being of desire -the false soul or desire-soul -is intended by the words 'soul' and 'psychic' and not the true soul, the psychic being. The psychic being is quite different from the mind or vital; it stands behind them where they meet in the heart. Its central place is there, but behind the heart rather than in the heart; for what men call usually the heart is the seat of emotion, and human emotions are mental-vital impulses, not ordinarily psychic in their nature. This mostly secret power behind, other than the mind and the life-force, is the true soul, the psychic being in us. The power of the psychic, however, can act upon ! the mind and vital and body, purifying thought and perception and emotion (which then becomes psychic feeling) and sensation and action and everything else in us and preparing them to be divine movements.
         The psychic being may be described in Indian language as the Purusha in the heart or the Chaitya Purusha; but the inner or secret heart must be understood, hrdaye guhuyam, not the outer vital-emotional centre.

SRI AUROBINDO