In stillness the power of thought is clear, well-ordered and intelligent. Likewise in stillness the power of decision is reasonable, true and certain. To help this it is possible to cultivate tranquillity of mind.

The poet T.S. Eliot used evocative language for this. He said:

At the still point of the turning world.
and:
at the still point, there the dance is.

(T.S. Eliot – Four Quartets, Burnt Norton)

The world indeed is ever turning. The art in life is to discover the still point of the turning world. This is not empty or a void. There the dance is.

In the same work there is also the following passage:

We shall not cease from exploration
And the end of all our exploring
Will be to arrive where we started
And know the place for the first time.

(T.S. Eliot – Four Quartets, Little Gidding)

When the mind does become completely still it is like coming back to ourselves, and knowing ourselves for the first time.