The supramental transformation, the supramental evolution must carry with it a lifting of mind, life and body out of themselves into a greater way of being in which yet their own ways and powers would be, not suppressed or abolished, but perfected and fulfilled by the self-exceeding.
For the powers of our mind, life, and body are bound to their own limitations, and however high they may rise or however widely expand, they cannot rise beyond them. But still, mental man can open to what is beyond him and call down a Supramental Light, Truth, and Power to work in him and do what the mind cannot do. If mind cannot by effort become what is beyond mind, Supermind can descend and transform mind into its own substance.
Thus 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.
The higher Truth is all the time working in us but through the lower power - Aparashakti. It is when we become conscious of the play of this higher Power then only yoga begins.
What is required is faith. Man has body, life and mind but that is not all that constitutes man. He has risen to the mind as a result of evolution. Now a higher consciousness will be evolved - this I call Supermind. It is the instrument of the Divine Consciousness, the Truth-Consciousness.