All pictures that's panted with sense and with thought

 Are panted by madmen, as sure as a groat;

 For the greater the fool is the pencil more blest, 

As when they are drunk they always pant best.They never can Raphael 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.  William Blake