“Only he knows it who has reached that region: it is other than all that is heard and said.”
Songs of Kabîr (1915)
Context: They call Him Emptiness who is the Truth of truths, in Whom all truths are stored!
There within Him creation goes forward, which is beyond all philosophy; for philosophy cannot attain to Him: There is an endless world, O my Brother! and there is the Nameless Being, of whom naught can be said.
Only he knows it who has reached that region: it is other than all that is heard and said.
No form, no body, no length, no breadth is seen there: how can I tell you that which it is?
Help us to complete the source, original and additional information
Kabir 38
Indian mystic poet 1440–1518Related quotes

The trial of Charles B. Reynolds for blasphemy (1887)
Source: The Friends of Voltaire (1906), Ch. 1 : D'Alembert: The Thinker, p.28

“He had reached a critical region; he was about to move through worlds of intricate complexity.”
The Golden Man (1954)
Context: He was always moving, advancing into new regions he had never seen before. A constantly unfolding panorama of sights and scenes, frozen landscapes spread out ahead. All objects were fixed. Pieces on a vast chess board through which he moved, arms folded, face calm. A detached observer who saw objects that lay ahead of him as clearly as those under foot.
Right now, as he crouched in the small supply closet, he saw an unusually varied multitude of scenes for the next half hour. Much lay ahead. The half hour was divided into an incredibly complex pattern of separate configurations. He had reached a critical region; he was about to move through worlds of intricate complexity.

A variant of part of this statement is often quoted: Just because your voice reaches halfway around the world doesn't mean you are wiser than when it reached only to the end of the bar.
RTNDA Convention Speech (1958)
Context: I have no technical advice or counsel to offer those of you who labor in this vineyard, the one that produces words and pictures. You will, I am sure, forgive me for not telling you that instruments with which you work are miraculous, that your responsibility is unprecedented or that your aspirations are frequently frustrated. It is not necessary to remind you of the fact that your voice, amplified to the degree where it reaches from one end of the country to the other, does not confer upon you greater wisdom than when your voice reached only from one end of the bar to the other. All of these things you know.

quoting Vogel, Steven, Life in Moving Fluids; the Physical Biology of Flow, Willard Grant Press, Boston, 1981.
Source: Permaculture: A Designers' Manual (1988), chapter 4.4