People
Work is the greatest thing in the world, so we should always save some of it for tomorrow.
— Don Herold

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker praises work extravagantly, then uses that praise to justify leaving some for tomorrow. The conclusion reverses the expected call to get on with it. The joke makes postponement sound like carefully preserving something valuable, giving reluctance to work a cheerful and apparently admiring excuse.
Context reviewed