Sri Aurobindo
Letters of Sri Aurobindo
Volume III - Part 2
Fragment ID: 12283
The sounds of bells and the seeing of lights and colours are signs of the opening of the inner consciousness which brings with it an opening also to sights and sounds of other planes than the physical. Some of these things, like the sound of bells, crickets etc., seem even to help the opening. The Upanishad speaks of them as brahmavyaktikarāṇi yoge. The lights represent forces – or sometimes a formed light like that you saw may be the Light of a being of the supraphysical planes.