Sri Aurobindo
Letters of Sri Aurobindo
11. Visions and Symbols
It is not necessary to have the mind quiet in order to see the lights – that depends only on the opening of the subtle vision in the centre which is in the forehead between the eyebrows. Many people get that as soon as they start sadhana. It can even be developed by effort and concentration without sadhana by some who have it to a small extent as an inborn faculty. The quietude of the mind is needed for other things, such as the feeling of the presence of the Mother etc.