Characters
She just goes a little mad sometimes. We all go a little mad sometimes. Haven't you?
— Norman Bates · Psycho
Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker excuses someone's occasional loss of sanity as a small lapse, then widens it into something universal: everyone goes a little mad at times. The closing question, "Haven't you?", tentatively asks the listener to agree, turning an excuse into an appeal for shared understanding.
Context reviewed