“Those who know do not speak. Those who speak do not know.” ― Lao Tzu
There's a lot in it, so, narrowing it to the discussion point
, I recall Chuck Norris sharing he
had plenty of MA talk with Bruce Lee when they first met and Bruce Lee, reportedly, hardly missed a chance to offer a discussion/inquiry to a MA expert. Enthusiasm might lead into something.
I guess bullshitters talk about their own achievements/competence while true enthusiasts wonder about others' (to learn/develop from, not just compare
).