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| Paragraph 1 |
It is clear too that every demonstration will proceed through
three terms and no more, unless the same conclusion is established
by different pairs of propositions; |
| Paragraph 2 |
(1) If it is E the syllogism will have A and B for its sole
premisses. |
| Paragraph 3 |
(2) But if from the propositions A and B there follows not E but
some other conclusion, and if from C and D either A or B follows or
something else, then there are several syllogisms, and they do not
establish the conclusion proposed: |
| Paragraph 4 |
So it is clear that every demonstration and every syllogism will
proceed through three terms only. |
| Paragraph 5 |
This being evident, it is clear that a syllogistic conclusion
follows from two premisses and not from more than two. |
| Paragraph 6 |
If then syllogisms are taken with respect to their main premisses,
every syllogism will consist of an even number of premisses
and an odd
number of terms (for the terms exceed the premisses by one), and the
conclusions will be half the number of the premisses. |