Timely silence, then, is precious, for it is nothing less than the mot — Silence

Silence is the absence of ambient audible sound, the emission of sounds of such low intensity that they do not draw attention to themselves, or the state of having ceased to produce sounds; this latter sense can be extended to apply to the cessation or absence of any form of communication, whether through speech or other medium. Remaining mute can be a symptom of mental illness.