All pictures that's painted with sense and with thought

All pictures that's painted with sense and with thought
Are painted by Madmen, as sure as a Groat;
For the Greater the Fool is the Pencil more blest,
As when they are drunk they always paint best.
They never can Rafael it, Fuseli it, nor Blake it;
If they can't see an outline, pray how can they make it?
When Men will draw outlines begin you to jaw them;
Madmen see outlines and therefore they draw them.