There is a veil between the Supermind above and the lower Prakriti below - the veil of ingrained formations. This veil may completely withdraw or be partially withdrawn. Thus even if there is some little opening, with the contact of Light from above the lower nature will get slowly changed.
Sri AurobindoWhen thou findest thyself scorning another, look then at thy own heart and laugh at thy folly.
Sri AurobindoThey proved to me by convincing reasons that God does not exist; Afterwards I saw God, for he came and embraced me. And now what am I to believe- the reasoning of others or my own experience? Truth is what the soul has seen and experienced; the rest is appearance, prejudice and opinion.
Sri Aurobindo