othersideofsilence

From George Eliot (AKA Mary Anna Evans), quoted in a NYTimes article on high definition television, and how there may be things one does not prefer to see in such detail:

//If we had a keen vision and feeling of all ordinary human life, it would be like hearing the grass grow and the squirrel's heart beat and we should die of that roar which lies on the other side of silence.//

What are some examples of this? the unspoken words in a book (Ali M.) clouds going by (Ms. Agell quoting a fifth grader)