People
You can pretend to be serious; you can't pretend to be witty.
— Sacha Guitry

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
Guitry draws a sharp line between two kinds of performance: solemnity is easy to fake, but genuine wit can't be manufactured on command. It's a compliment to true cleverness disguised as a dry observation about pretense.
Context reviewed