People
The mark of an immature man is that he wants to die nobly for a cause, while the mark of a mature man is that he wants to live humbly for one.
— J.D. Salinger

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
A contrast between two attitudes toward a cause. Wanting to die nobly for it sounds dramatic but immature, while wanting to live humbly for it is called mature. The quote favours steady, everyday commitment over grand gestures.
Context reviewed