The "Ars Poetica" of Horace--I (Lines 1-23)

Should painters attach to a fair human head
The thick, turgid neck of a stallion,
Or depict a spruce lass with the tail of a bass--
I am sure you would guy the rapscallion!

Believe me, dear Pisos, that such a freak
Is the crude and preposterous poem
Which merely abounds in a torrent of sounds
With no depth of reason below 'em.

'Tis all very well to give license to art--
The wisdom of license defend I;
But the line should be drawn at the fripperish sprawn
Of a mere cacoethes scribendi.

It is too much the fashion to strain at effects--
Yes, that's what's the matter with Hannah!
Our popular taste by the tyros debased
Paints each barnyard a grove of Diana!

Should a patron require you to paint a marine,
Would you work in some trees with their barks on?
When his strict orders are for a Japanese jar,
Would you give him a pitcher like Clarkson?

Now this is my moral: Compose what you may,
And fame will be ever far distant,
Unless you combine with a simple design
A treatment in toto consistent.