People
If we would build on a sure foundation in friendship, we must love friends for their sake rather than for our own.
— Charlotte Brontë

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
Lasting friendship, this says, needs you to value the other person for who they are, not for what they give you. Love based on your own benefit is shaky ground; caring for their sake is what makes it solid.
Context reviewed