Sri Aurobindo's Conversations with Pavitra. Part 4. The Higher Force

Sri Aurobindo: There are two principal forces which help in the ascent of man. One is aspiration; it is emotive and has its centre in the solar plexus. The other is supramental and its centre is above the head. You act in ordinary life with the help of the first. In meditation your consciousness goes back into the higher mind. The silence aspired for, is not for itself, but only in order to let this higher force descend and rejoin the other.