1. When people are angry with each other, their hearts become far away from each other.
2. In this state they cannot hear each other without shouting.
3. The more angry they get, the greater the distance between them, and then the louder they have to shout.
4. When people like each other, they talk softly instead of shouting because their hearts are closer to each other, leaving a minimal distance between them.
5. And when they like each other very much, then they don't even have to speak as they understand each other only by looking at each other.