Original artwork, not a still
It is the glory and merit of some men to write well, and of others, not to write at all.
Behind the line
What it means
Our interpretation.
This turns the usual idea of literary glory around: some people earn honor by writing beautifully, and others earn it by holding back and never writing at all. It's a wry jab, implying that restraint can be a real merit when the work wouldn't be good.
Context reviewed