Beyond our struggling human mind there exists an Ideal world of Truth and Light where grief and error have no place. The beings of this world exist in a self-luminous light and perfect sight. These are the high Heavens of the Mind.
In Canto XI Sri Aurobindo introduces us to the realm of spiritual mind or simply the spiritual realm. Many mistake it for the highest reality and stop here. The action and workings of this realm are being described here.