Uncle Eph has it right. Way back in the early 70s I was living in Scotland and there was a revival of "the Searchers" going on. One of the British critics singled out that particular scene as possibly the best, most perfectly structured scene in American cinema, though wordless:
WARD BOND sips coffee, glances up, sees:
MARTHA thinking nobody is looking, caresses Ethan's coat.
WARD BOND still sipping his coffee, stares straight ahead.
The Brit critic said that, seeing that scene, you know that there is no way on God's Earth that Bond's character will ever speak a word about what he has just seen. He said that it spoke volumes about American frontier ethics. Sometimes it takes a furriner to see what is berst in us.