No doubt, the Supermind has also acted in the history of the world but always through the Overmind. It is the direct descent of the Supramental Consciousness and Power that alone can utterly re-create life in terms of the Spirit. For, in the Overmind there is already the play of possibilities which marks the beginning of this lower triple world of Mind, Life and Matter in which we have our existence. And whenever there is this play and not the spontaneous and infallible working of the innate Truth of the Spirit, there is the seed of distortion and ignorance. Not that the Overmind is a field of ignorance; but it is the border-line between the Higher and the Lower, for, the play of possibilities, of separate even if not yet divided choice, is likely to lead to deviation from the Truth of things.
The Overmind, therefore, does not and cannot possess the power to transform humanity into divine nature. For that, the Supramental is the sole effective agent. And what exactly differentiates our Yoga from attempts in the past to spiritualise life is that we know that the splendours of the Overmind are not the highest reality but only an intermediate step between the mind and the true Divine.
[The Mother: CWM 3]
