If Mind is to be regarded aright, we must put out of our thought even the notion of the cosmic Ever-Becoming. But to do this is to enter a virtual Void? Precisely. When we take away all the forms of external physical existence and all the differences of internal mental existence, what we get is an utter emptiness of being which can hardly be differentiated after we have taken away its features and individualities, its finite times and finite distances. There is then nothing but a great void. What is the nature of this void? It is pure Thought. It is out of this empty Thought that the fullness of the universe has paradoxically evolved. Hence it is said that the world's reality is secondary whereas Mind's reality is primary. In the Void the hidden oneness of things is disengaged from the things themselves. Silence therefore is not merely the negation of sound but rather the element in which, as Carlyle said, great things fashion themselves. It is the supreme storehouse of power.
-- Notebooks Category 28: The Alone > Chapter 1 : Absolute Mind > # 114
-- Perspectives > Chapter 28: The Alone > # 5