In fact, not much needs to be said in the practice of emptiness, nor can realization of emptiness really be described. For example, Ch’an Buddhism does not advocate the use of words. The Ch’an masters do not like to say much, since they feel there is nothing to be said or can be conveyed through words. One cannot say things are empty, or things are not empty. Neither assertion is correct, the reason being these are ideas of ordinary people, whereas the state of emptiness goes beyond the limits of expression and what ordinary people can conceptualize.

Although emptiness cannot be described with words, it is not a senseless state like in deep sleep or when one is unconscious. At that moment, we have a profound kind of feeling – that of seeing everything clearly as empty, just as we now clearly see the wall in front is white without having to think “this wall ought to be white.” This sense of seeing is not through the eyes but the mind, and comes from deep within.

- Quote from The Four Seals of Dhama, "The Practice of Realizing Emptiness"