This Law of Science, which we teach our Youth
Even THIS, no Mediocrity admit,
Rules, Nature, Reason, all must jointly fit:
A Painter may Raphael's Judgment want,
And yet, we some Abilities will grant: ...
In Building, there's no Laws of human Kind,
Admit a Medium; to the Artist's Mind,
All must be perfect, or 'tis understood,
Excessive Ill,——or else sublimely Good.
(pp. 29-30.)