The psychic being and the mental being, Manomaya Purusha, are not the same. The psychic being is behind the mind, it is what the Westerners call the soul. It takes interest in the movements of the mind and the vital only when there is a harmony between these movements and the truth above. The knowledge of the psychic being is deeper.
Sri AurobindoThus to act under the guidance coming from above, this is one side of the sadhana, the dynamic side. The other one is the discrimination between the Purusha and the Prakriti. The Purusha will calmly observe, give sanction, choose, but will realise that all this does not belong to him - all these are outside him. This is the static side of the sadhana. These two aspects constitute the basis of Yoga.
Sri AurobindoThe fly that touches honey cannot use it's wings; so too the soul that clings to spiritual sweetness ruins it's freedom and hinders contemplation.
Sri Aurobindo