People
Dad’s voice was a midnight school, teaching deep fathom hours, and the subject was life.
— Ray Bradbury · Something Wicked This Way Comes

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker remembers their father's voice at night as a kind of school, holding deep, unhurried hours of instruction. What he taught was life itself. The image is tender and admiring, treating his talk as both nourishing and profound.
Context reviewed