Many believed that the silence of a person could be the mysterious nature of one's being. Emotions may take place, one is either shy, unwell, disappointed or simply entrusting. But come to think of this line: 'You may hear all things but you won't determine which is real or not unless everything is in silent.'
The line goes as simple as this: 'You may hear all persons talk but you don't know who will keep quiet just to give you chance to speak.' So simple but true and the clear thing about this: silence is sincerity.
In friendship you don't need to shout with full voice just to inform everybody that you are friended with someone. With those simple smiles you're sharing, you are already friends as they easily notice.
In times when things seem went wrong, the only thing that could heal your soul is silence. Where you are given the chance to realize everything; what you need to do, what must happen and what are the things to be corrected.
In love, you won't know if it's real until you just sit beside him/her and feel happiness even without doing anything. Yes, nature of silence may hard to identify. You may think of various reasons. But the time you close your eyes, open your ears and feel the sincerity you will clearly understand what it means because only the heart could hear the breaking sound which the lips cannot pronounce, known to be: the unspoken words.