COLLECTIONS 2: ARISTOTLE, CICERO
1. Aristotle, Rhetoric (between 329 & 323 b.c)
1.1 The catalog and its position in the Aristotelian system of proofs
The catalogue of the Rhetoric must be seen within the framework of the Aristotelian typology of the different types of proofs carried by different types of discourses. In this typology of proofs, rhetorical discourse is opposed to diaIectical dialogue and to scientific (syllogistic) discourse. Tricot points out that “syllogism is the genre, scientific (producer of science) [is] the specific difference that separates the scientific demonstration from the dialectical and rhetorical syllogisms” (S. A., I, 2, 15-25; p. 8, note 3). The concept of persuasion in the Rhetoric must be seen in this context: scientific discourse produces apodictic knowledge; dialectical interaction produces probable truth and rhetorical syllogism or enthymeme is an element of persuasive discourse. Thus, by its very definition, rhetorical discourse cannot be probative; in short, the phrase “rhetorical evidence persuades” is a pleonasm.
The catalogue of arguments is located in the subtypology that organizes the rhetorical proofs (proof = pistis, “means of pressure”), as follows
1.2 Wavering distinctions
Aristotle makes the following distinctions between the different types of rhetorical proofs:
The proofs attached to the logos are enthymemes, which correspond to deduction; examples, which corresponds to induction; and arguments based on natural signs, that are probable or certain. Enthymemes and examples are said to be common to the three ancient rhetorical genres (epideictic, deliberative, judicial, S. Rhetoric.)
The articulation of these different kinds of proofs, and the consistency of the text of the Rhetoric such as we read it now, is problematic (McAdon 2003, 2004). The classification of proofs attached to logos has important variants:
(a) “I call an enthymeme a rhetorical syllogism, and an example rhetorical induction. Now all orators produce belief by employing as proofs either examples or enthymemes, and nothing else.” (Rhet., I, 2, 8; Fr., p. 19)
(b) “The materials from which the enthymemes are derived […] being probabilities and signs […].” (Ibid I, 2, 14; p. 25)
(c) “Now the material of enthymemes is derived from four sources — probabilities, examples, necessary signs and signs.” (Ibid II, 15, 8; p. 337)
The example is placed on the same level as the enthymeme in (a), but is considered a form of the enthymeme in (c); enthymemes have four sources in (c), and two in (b). So, it would be risky to look for a rigorous system in these presentations of rhetorical proof, and the above table must be taken as a simple reminder.
1.3 The topoi of the Rhetoric
The Rhetoric enumerates twenty-eight topoi (topics) or “lines of argument” (Rhet, II, 23), as listed in the following table. An enthymeme is a discursive instance of a topos.
They are identified by their English label or by a brief description, both quoted from Freese (F) or Rhys Roberts (RR).
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- “From opposites” (F). S. Opposites
- “From similar inflexions” (F). S. Derived words
- “From relative terms” (F); “upon correlative ideas” (R). S. Correlative terms
- “From the more or less” (F); a fortiori (R). S. A fortiori
- “The consideration of time” (F). S. Consistency
- “Turning upon the opponent what has been said against ourselves” (F). S. Ethos; A fortiori.
- “From definition” (F). S. Definition
- “Topic from the different significations of a word” (F). Aristotle explicitly refers to this topos in his Topics. S. Ambiguity.
- “From division” (F). S. Case-by-case
- “From induction” (F). S. Induction
- “From a previous judgment in regard to the same or a similar or contrary matter”, that judgment having been given by one of “those whose judgment it is not possible to contradict” (F). S. Precedent; Ab exemplo; Authority; Modesty; Politeness
- “From enumerating the parts” (F). S. Case-by-case
- “Since in most human affairs the same thing is accompanied by some bad or good result, […] employing the consequences to exhort or dissuade, accuse or defend, praise or blame” (F). S. Pragmatic argument; Dilemma
- [id. 13], “but there is this difference that in the former case [i.e., 13] things of any kind whatever, in the latter [i.e., 13] opposites” (F). S. Pragmatic argument; Dilemma
- “Men do not praise the same thing in public and in secret” (F). S. Motives
- “From analogy in things” (F). S. Analogy; Opposites.
- “Concluding the identity of precedents from the identity of results” Instance: “There is as much impiety in asserting that the gods are born as in saying that they die; for either way the result is that at some time or other they did not exist” (F). S. Consequence; Implication.
- “The same men do not always choose the same thing before and after but the contrary” (F). S. Consistency.
- “Maintaining that the cause of something which is or has been is something which would generally, or possibly might be the cause of it; for example, if one were to make a present of something to another, in order to cause him pain by depriving him of it” (F). S. Motives
- “Examining what is hortatory and dissuasive, and the reasons which make men act or not” (F). S. Motives
- “Things which are thought to happen but are incredible” (F). S. Probable.
- “Another line of argument is to refute your opponent’s case by noting any contrast or contradiction of dates, acts or words that it anywhere displays” (RR). S. Contradiction; Consistency; Ad hominem.
- “Another topic, when men or things have been attacked by slander […] consists in stating the reason for the false opinion” (F). S. Motives; Interpretation
- “Another topic is derived from the cause. If the cause exists, the effect exists; if the cause does not exist, the effect does not exist” (F). S. Motives
- “Whether there was or is another better course than that which is advised, or is being, or has been carried out” (F). S. Consistency; Motives
- “Another topic, when something contrary to what has already been done is on the point of being done, consists in examining them together” (F). S. Consistency
- “Another topic consists in making use of errors committed for purposes of accusation or defense” (F). S. Contradiction; Consistency
- “From the meaning of a name” (F). S. Proper Name
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Even if no clear order emerges from this enumeration, it can be noted that an important subset of topics is essentially concerned with the world of human action and its determination, where motives have been substituted for causes, and behavioral stereotypes about human nature and human motivations have replaced strict scientific causality and taxonomies.
2. Cicero, Topica, “Topics” (44 b.c.)
Cicero proposes a typology of arguments in an early work, De Inventione, “On Invention” and in his last book on arguments, Topica, “Topics”. Unlike the Topics of Aristotle, which exposes a method for finding and criticizing arguments in the context of a dialectical philosophical exchange, Cicero’s observations and examples always refer to rhetoric as a legal practice. In this context, Cicero makes the following distinction:
- Intrinsic arguments, either “inherent in the very nature of the subject which is under discussion” or “closely connected with the subject which is investigated” (, I, 8; p. 387-389).
- Arguments taken “from external circumstances”, or “extrinsic arguments” (, II, 8; p. 388; IV, 24, p. 397), corresponding to the so-called non-technical arguments, mainly testimonies and their conditions of validity, and including authority (Top., IV, 24; p. 397).
Objects and facts are constructed and discussed on the basis of arguments drawn from five main sources.
Arguments from definition:
— from genus and species of the genus (a genere; a forma generis).
— by enumeration of the parts (partium enumeratio)
— from “etymology” (ex notatione)
— from words of the same family (a conjugata)
— “based on difference” (a differentia).
See Categorization and Nomination; Definition; Genus; Case-by-case; True meaning of the word; Derived Words
Arguments from causal relations
— from efficient causes (ab efficientibus causis)
— from effects (ab effectis).
See Causality.
Arguments from analogy (a similitudine).
See A pari; Intra-categorical analogy; Structural analogy
Arguments from opposites (ex contrario). See Opposites
From circumstances. Arguments:
— from antecedents, ab antecedentibus,
— from consequents, a consequentibus
See Circumstances
This short and organized list of arguments is all important in the Western tradition of argumentation studies. They were transmitted in the Middle Ages by Boethius (around 480-524) On Topical Differences (Top., c. 522), and were taken up by medieval logic, dialectic and philosophy. They remained in use until well into the modern era, S. Collections (3).
3. Quintilian, Institutio Oratoria, “The Orator’s Education” (c. 95)
In Book V, Chap. 10 of the Institutes of Oratory, dealing with arguments, Quintilian summarizes a list of 24 argumentative lines (IO, V, 10, 94). A first series deals with common places.
A second series is a catalog of argument schemes: the French translator, J. Cousin, notes that
This list-summary, which seems to be a loan, recalls previous classifications, with their elements arranged in a different order: […] Later rhetoricians condense or develop without apparent reason. (1976, p. 240).