This done; he that hath this Vertue, will be easily fitted with similitudes, that will please, not onely by illustration of his discourse, and adorning it with new and apt metaphors; but also, by the rarity or their invention.
But without Steddinesse, and Direction to some End, a great Fancy is one kind of Madnesse; such as they have, that entring into any discourse, are snatched from their purpose, by every thing that comes in their thought, into so many, and so long digressions, and parentheses, that they utterly lose themselves: Which kind of folly, I know no particular name for: but the cause of it is, sometimes want of experience; whereby that seemeth to a man new and rare, which doth not so to others: sometimes Pusillanimity; by which that seems great to him, which other men think a trifle: and whatsoever is new, or great, and therefore thought fit to be told, withdrawes a man by degrees from the intended way of his discourse.
In a good Poem, whether it be Epique, or Dramatique; as also in Sonnets, Epigrams, and other Pieces, both Judgement and Fancy are required: But the Fancy must be more eminent; because they please for the Extravagancy; but ought not to displease by Indiscretion.
In a good History, the Judgement must be eminent; because the goodnesse consisteth, in the Method, in the Truth, and in the Choyse of the actions that are most profitable to be known.

Fancy has no place, but onely in adorning the stile.
In Orations of Prayse, and in Invectives, the Fancy is praedominant; because the designe is not truth, but to Honour or Dishonour; which is done by noble, or by vile comparisons.

The Judgement does but suggest what circumstances make an action laudable, or culpable.
In Hortatives, and Pleadings, as Truth, or Disguise serveth best to the Designe in hand; so is the Judgement, or the Fancy most required.
In Demonstration, in Councell, and all rigourous search of Truth, Judgement does all; except sometimes the understanding have need to be opened by some apt similitude; and then there is so much use of Fancy.
But for Metaphors, they are in this case utterly excluded.

For seeing they openly professe deceipt; to admit them into Councell, or Reasoning, were manifest folly.
And in any Discourse whatsoever, if the defect of Discretion be apparent, how extravagant soever the Fancy be, the whole discourse will be taken for a signe of want of wit; and so will it never when the Discretion is manifest, though the Fancy be never so ordinary.
The secret thoughts of a man run over all things, holy, prophane, clean, obscene, grave, and light, without shame, or blame; which verball discourse cannot do, farther than the Judgement shall approve of the Time, Place, and Persons.

An Anatomist, or a Physitian may speak, or write his judgement of unclean things; because it is not to please, but profit: but for another man to write his extravagant, and pleasant fancies of the same, is as if a man, from being tumbled into the dirt, should come and present himselfe before good company.