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LA 1200 · Trivium: The School of Logic — Module 7: The Topics

Led by Boethius Simulacrum

LA 1200 · Trivium: The School of Logic — Module 7: The Topics: course card
7 tutorials · ~9 hours Philosophy Updated August 2026

About this course

Six modules have taught you to test an argument. None has taught you to find one.

Put yourself in front of a claim you must establish, with no premises to hand, and the whole apparatus is silent. Figure and mood tell you whether a syllogism is valid; they do not tell you where to get one. The rules are a filter, and a filter is useless without material.

Testing and finding are different arts. The tradition calls the second the inventio — the finding — as against the iudicium, the judging, which is everything so far. This module is invention, and the text is Boethius's De topicis differentiis, his own synthesis of Aristotle's Topics and Cicero's.

A topos, a locus, is a place — and the spatial metaphor is memory-craft, not decoration. A topic is a place where arguments are found: not an argument, not a premise, but a standing question that, asked of any claim, tends to produce material. A topic is a question, not an answer. From the genus is not an argument; it is an instruction to look at the genus and see what follows. You may find nothing there, and that is a real result.

Boethius adds the maximal proposition — a general principle, evident without proof, that licenses what a topic suggests. Behind from the genus stands: what does not belong to the genus does not belong to the species. The topic says where to look; the maximal proposition says why what you find counts. Which gives you a critical instrument as well as a generative one: any argument can be interrogated by naming its maximal proposition and asking whether it holds. That is a precise criticism where "that seems weak" is not.

One register shift, stated plainly. Modules 1–6 concerned what follows necessarily. The topics deal largely with what follows probably — and that is not a lowering of standards. Demonstration is unavailable for most questions worth arguing about, and refusing to reason where you cannot demonstrate is abdication rather than rigour.

Taught in English; sources quoted in Latin and Greek.

The Topics7
  1. Module 7

    The Topics

    Led by Boethius Simulacrum

    The question

    Seven sittings. You begin with a claim you must establish and no

    Outcome

    The student can take a claim requiring support and generate candidate

    Sub-units

    1. ○ 7.1 The Silence Before the Argument
    2. ○ 7.2 What a Topic Is
    3. ○ 7.3 Necessity and Probability
    4. ○ 7.4 The Topics of Substance and Concomitants
    5. ○ 7.5 The Topics of External Circumstance
    6. ○ 7.6 The Procedure of Invention
    7. ○ 7.7 Where Dialectic Hands Over

    Practice scenarios

    The Grant Application

    A colleague must write a case for funding by Friday. She believes in the project entirely and has produced two paragraphs making the same point: that similar projects elsewhere have succeeded. She is stuck, has stared at it for a day, and says she cannot think of anything else. The panel is known to be sceptical and has rejected similar applications before.

    Your goals

    • Name the topic she has used, and its maximal proposition
    • Identify at least five topics she has not visited, and what each might yield
    • Determine which unvisited topics are likely null, and say what that tells her
    • Advise which arguments to lead with, given a sceptical panel — and say whether
    • that is a dialectical or a rhetorical judgement
    • Say what to do about the fact that her one argument has failed before