What is meant in the terminology of the yoga by the psychic is the soul element in the nature, the pure psyche or divine nucleus which stands behind mind, life and body (it is not the ego) but of which we are only dimly aware. It is a portion of the Divine and permanent from life to life, taking the experience of life through its outer instruments. As this experience grows it manifests a developing psychic personality which insisting always on the good, true and, beautiful, finally becomes ready and strong enough to turn the nature towards the Divine. It can then come entirely forward, breaking through the mental, vital and physical screen, govern the instincts and transform the nature. Nature no longer imposes itself on the soul, but the soul, the Purusha, imposes its dictates on the nature.

SRI AUROBINDO