In a new article by Albert Mohler he examines the inherit value of silence to human culture, and especially to children. Here is my favorite excerpt, which he quotes from Susan Hill:
If children do not learn to focus and concentrate in a pool of quietness, their minds become fragmented and their temperaments irritable, their ability to absorb knowledge and sift it, grade it and evaluate it do not develop fully. Reading a book quietly, watching a raindrop slide slowly down a windowpane or a ladybird crawl up a leaf, trying to hear the sound of a cat breathing when it is asleep, asking strange questions, such as, "Where do all the colors go at night?" and speculating about the possible answers — all of these are best done in silence where the imagination can flourish and the intricate minutiae of the world around us can be examined with the greatest concentration.