When you inquire 'Who am I?' if you are honest, you'll notice that it takes you right back to silence instantly. The brain doesn't have an answer, so all of a sudden there is silence.
If we try to listen we find it extraordinarily difficult, because we are always projecting our opinions and ideas, our prejudices, our background, our inclinations, our impulses; when they dominate, we hardly listen at all to what is being said...One listens and therefore learns, only in a state of silence, in which this whole background is in abeyance, is quite; then, it seems to me, it is possible to communicate
The pause - that impressive silence, that eloquent silence, that geometrically progressive silence which often achieves a desired effect where no combination of words, howsoever felicitous, could accomplish it.