The supramental consciousness, while transcending the reasoning intelligence and shifting the standpoint from the limited and restricted mental framework, nevertheless does not deny the role and purpose of the mental consciousness in the manifested creation during the transition from reliance on mind to reliance on supermind. Sri Aurobindo describes its role:
“The reasoning intelligence is an intermediate agent between the life-mind and the yet undeveloped supramental intuition. Its business is that of an intermediary, on the one side to enlighten the life-mind, to make it conscient and govern and regulate as much as may be its action until Nature is ready to evolve the supramental energy which will take hold of lire and illumine and perfect all its movements by converting its obscurely intuitive motions of desire, emotion, sensation and action into a spiritually and luminously spontaneous life manifestation of the self and spirit. On the other higher side its mission is to take the rays of light which come from above and translate them into terms of intelligent mentality and to accept, examine, develop, intellectually utilise the intuitions that escape the barrier and descend into mind from the superconscience. It does this until man, becoming more and more intelligently conscient of himself and his environment and his being, becomes also aware that he cannot really know these things by this reason, but can only make a mental representation of them to his intelligence.”
Sri Aurobindo, The Synthesis of Yoga, Part Four: The Yoga of Self-Perfection, Chapter 23, The Supramental Instruments — Thought-process , pg. 819
Sri Aurobindo Studies 