In Buddhist history the word silence corresponds to right view: seeing impermanence, the truth that everything is appearing, disappearing, and changing from moment to moment. Impermanence is not something you see objectively—it is something you taste directly. Then impermanence makes you silent, because impermanence is very quiet. That silence connects you with a deep sense of human value.
Silence is not just being silent. You are silent, but simultaneously there are many words, many explanations, and many representations there. Dynamic actions, both physical and mental, are there. In other words, silence is something deep and also very active. In Japanese the word for this silence is mokurai. Moku means “silence” and rai means “thunder.” So silence is quiet, but there is an enormous voice like thunder there.