Aristotle - The Organon - index for TOPICA Book 8 Part 3

Sources of difficulty in discussion

Paragraph 1 There are certain hypotheses upon which it is at once difficult to bring, and easy to stand up to, an argument.
Paragraph 2 In general, it is safe to suppose that, whenever any problem proves intractable, it either needs definition or else bears either several senses, or a metaphorical sense, or it is not far removed from the first principles;
Paragraph 3 It often happens that a difficulty is found in discussing or arguing a given position because the definition has not been correctly rendered:
Paragraph 4 One may be sure then, whenever a position is hard to discuss, that one or other of the aforesaid things has happened to it.

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