The Man MakesSay less. Mean more. Let the silence do half the work.
The reserved man holds his words the way a careful man holds his money. He does not spend what he does not need to spend.
This is not coldness. It is economy. He has noticed that the man who says everything is rarely worth hearing, and the man who explains himself constantly is usually asking to be approved of. So he listens twice as long as he speaks. He lets a silence sit. And when he finally does speak, men lean in — because he has taught them that his words are not free.
The Stoic source
Epictetus, Enchiridion 33And let silence be the general rule, or let only what is necessary be said, and in few words.
Translated by George Long
The Scripture
Proverbs 17:27, KJVHe that hath knowledge spareth his words: and a man of understanding is of an excellent spirit.
The move
In your next disagreement, ask one question and then stop talking. Let the other man fill the space. Listen to what he reveals.