Silence is part of a few grains of spirituality and not the Reality itself. If we want to explain it, we can say that silence in silence is nearer to God. That means silence is itself the seat on which silence stands.
By practice alone we can interpret silence. Just have an idea and the thing will start. There are so many worms outside which our naked eye cannot see but they are there. So silence is there in abstract form, though we may not be able to see it. It can be seen by constant practice.
One should be alert always while speaking, reading, etc. This is necessary to catch Shruti, which may come down from above. But not one in 5,000 is alert. One has to cultivate it, meditate on it and see what is there.
All acts should be done as God's trust and this in itself becomes worship.