These are the Idiots' chiefest arts

These are the Idiots' chiefest arts:
To blend and not define the parts.
The Swallow sings, in Courts of Kings,
That Fools have their high finishings.

And this the Princes' golden rule,
The Laborious Stumble of a Fool.
To make out the parts is the wise man's aim,
But to loose them the Fool makes his foolish Game.