Isa Upanishad in The Thirteen Principle Upanishads -- London: Oxford University Press, 1954

The Isa Upanishad is a short verse exposition of some of the central ideas of the Upanishads. The nature and the incomprehensibility of Brahma in particular are described. The following two verses exemplify these ideas.

It moves. It moves not.
It is far, and it is near.
It is within all this,
And it is outside of all this.

And later:

Into blind darkness enter they
That worship ignorance;
Into darkness greater than that, as it were, they
That delight in knowledge.