People
An optimist is a guy that never has had much experience.
— Don Marquis

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
Don Marquis delivers a wry, cynical jab at optimism, suggesting cheerful people simply haven't collided with life's harsher realities yet. The joke implies that disappointment eventually reshapes anyone's outlook, making naive hopefulness a symptom of limited experience.
Context reviewed