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IN as many ways as we can change thingsThings mean propositions and terms. See Aristot. Analyt. Prior. i. 39, δεῖ δὲ καὶ μεταλαμβάνειν, etc. Ἐπιχειρήματα are arguments of any kind with which we attack (ἐπιχειρεῖν) an adversary. which are equivalent to one another, in just so many ways we can change the forms of arguments (ἐπιχειρήματα) and enthymemesThe Enthymeme is defined by Aristotle: ἐνθύμημα μὲν οὖν ἐστι συλλογισμὸς ἐξ εἰκότων ἢ σημείων (Anal. Prior. ii. c. 27). He has explained, in the first part of this chapter, what he means by εἰκός and σημεῖον. See also De Morgan’s Formal Logic, p. 237; and P. C. Organon, p. 6, note. (ἐνθυμήματα) in argumentation. This is an instance: if you have borrowed and not repaid, you owe me the money: you have not borrowed and you have not repaid; then you do not owe me the money. To do this skilfully is suitable to no man more than to the philosopher; for if the enthymeme is an imperfect syllogism, it is plain that he who has been exercised in the perfect syllogism must be equally expert in the imperfect also.
