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CHAP. XXIII.
Of the Invention of Enthymemes.
SEeing an Enthymeme differs from a Lo∣gical Syllogisme, in that it neither con∣cludes out of every thing, nor out of remote Principles; the Places of it, from whence a Man may argue ought to be certain, and determinate.
And because whosoever makes a Syllo∣gisme Rhetorical, or other, should know all, or the most part of that which is in question; as, whosoever is to advise the Athenians in the question, whether they are to make War or no, must know what their Revenues be; what, and what kind of power they have: and he that will praise them, must know their acts at Salamis, Ma∣rathon, &c. It will be necessary for a good speaker to have in readiness the choicest particulars of whatsoever he foresees he may speak of.
He that is to speak ex tempore, must com∣prehend in his speech as much as he can of what is most proper in the matter in hand.
Proper, I call those things which are least common to others; as, he that will praise Achilles, is not to declare such things