People
Courteousness is consideration for others; politeness is the method used to deliver such considerations.
— Bryant McGill

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
Consideration is the feeling behind courtesy; politeness is how that feeling reaches another person. The wording separates caring about others from the manner of showing it. A kind intention and a considerate delivery belong together here, even though they are described as different things.
Context reviewed