When a person is angry with another person, that person is removed from their heart. That's why the physical reaction is to shout. The greater the distance, the louder the shouting. But when individuals are in love, they speak softly, and when they are further in love, no words are needed.
Stillness is tranquility of the inner life, the quiet at the depths of its hidden stream. Stillness is a collected, total presence, a being all there, receptive, alert, ready.