Sri Aurobindo
Letters of Sri Aurobindo
Volume III - Part 2
Fragment ID: 12355
The plane with the blue light is the Higher Mind which is just above the ordinary human intelligence, the first of several planes of higher consciousness through which one has to pass in order to reach the Divine Truth. Something from your mind (thinking willing mind) is trying to rise up into the blue light of the Higher Mind so as to join and become one with it.