People
The older I grow, the more I listen to people who don't talk much.
— Germain G. Glidden

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
Growing older is associated with paying closer attention to quieter people. The apparent contradiction is that saying less can invite more listening. The speaker describes a changing preference, suggesting that the amount someone talks is not a reliable measure of how much attention their words deserve.
Context reviewed