Pure Self : Mirror facing another clear mirror
The Self is the only Reality which permeates and also envelops the world. Since there is no duality, no thoughts will arise to disturb your peace. This is realization of the Self. The Self is eternal and so also its Realization.
In the course of the discourse Sri Bhagavan also made a few points clearer:
Abhyasa consists in withdrawal within the Self every time you are disturbed by thought. It is not concentration or destruction of the mind but withdrawal into the Self.
Dhyana, bhakti, japa, etc., are aids to keep out the multiplicity of thoughts. A single thought prevails which too eventually dissolves in the Self.
The questioner quoted that the mind starved of ideas amounted to realization and asked what the experience is in that state. He himself read out a passage from Mr. Brunton that it was indescribable. The answer was there.
The questioner again ventured out that it must be like looking through an unsilvered mirror, as contrasted with the present experience corresponding to looking on a silvered mirror.
Sri Bhagavan said it was a mirror facing another clear mirror, i.e., no reflection.
Talks with Ramana Maharshi
30th April, 1938