topics of invention
topoi
loci communes
commonplaces

Within rhetorical invention, the topics or topoi are basic categories of relationships among ideas, each of which can serve as a template or heuristic for discovering things to say about a subject. "Topics of invention" literally means "places to find things." Aristotle divided these into the "Common" and "Special" topics of invention, the former being more general, the latter relevant to each of the three branches of oratory.

Common Topics Special Topics
Definition
     Genus / Species
Division
     Whole / Parts
     Subject / Adjuncts
Comparison
     Similarity / Difference
     Degree
Relationship
     Cause / Effect
     Antecedent / Consequence
     Contraries
     Contradictions
Circumstances
     Possible / Impossible
     Past Fact / Future Fact
Testimony
     Authorities
     Witnesses
     Maxims or Proverbs
     Rumors
     Oaths
     Documents
     Law
     Precedent
     The supernatural
Notation and Conjugates
Judicial
     justice (right)
     injustice (wrong)
Deliberative
     the good
     the unworthy
     the advantageous
     the disadvantageous
Ceremonial
     virtue (the noble)
     vice (the base)

Although the topics of invention were the starting places for composing or generating speech or writing within the rhetorical tradition, they were not the only beginning points. From classical antiquity up to the seventeenth century, imitation was equally important for providing material and formal models for students of speaking and writing. In fact, there is room to argue that imitative praxis and pedagogy better account for rhetorical composition historically than do the abstract categories of the topics of invention.

See Also

  • Figures of Speech and Thought
    The figures of thought were sometimes identical with various topics of invention, or were comparable to the topoi in suggesting various ways of dealing with the subject matter or content of communication, rather than the style of that communication.

Sources: Aristotle 2.23; Cic. Top. 1.2, passim



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This work is licensed under a Creative Commons Attribution 3.0 License.
Gideon O. Burton, Brigham Young University
Please cite "Silva Rhetoricae" (rhetoric.byu.edu)


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