Absence of Thought

The absence of thought is quite the right thing—for the true inner consciousness is a silent consciousness which has not to think out things, but gets the right perception, understanding and knowledge in a spontaneous way from within and speaks or acts according to that. It is the outer consciousness which has to depend on outside things and to think about them because it has not this spontaneous guidance. When one is fixed in this inner consciousness, then one can indeed go back to the old action by an effort of will, but it is no longer a natural movement and, if long maintained, becomes fatiguing. As for the dreams, that is different. Dreams about old bygone things come up from the subconscient which retains the old impressions and the seeds of the old movements and habits long after the waking consciousness has dropped them. Abandoned by the waking consciousness, they still come up in dreams; for in sleep the outer physical consciousness goes down into the subconscient or towards it and many dreams come up from there.

The silence in which all is quiet and one remains as a witness while something in the consciousness spontaneously calls down the higher things is the complete silence which comes when the full force of the higher consciousness is upon mind and vital and body.

Ref : Letters on Yoga Vol. III