Book, Paragraph

 1      I, 26|              to us both what sort of problem is difficult and what sort
 2      I, 26|        another, the character of the problem proved in each figure, and
 3      I, 26|          figures appropriate to each problem, all these matters are clear
 4      I, 27|       syllogisms in reference to the problem proposed and by what road
 5      I, 27|           principles relative to the problem: for perhaps we ought not
 6      I, 27|           premisses suitable to each problem in this manner: first we
 7      I, 29|            in question. Whatever the problem the same inquiry is necessary
 8      I, 29|         directed to the terms of the problem to be proved-not the terms
 9      I, 29|            the terms of the original problem, but the new terms introduced;
10      I, 30|          said about the terms of the problem or to the same points whether
11      I, 31|          points we must look in each problem.~
12      I, 32| aforementioned figures, our original problem would be brought to a conclusion.
13      I, 42|           with this. Since not every problem is proved in every figure,
14     II, 1 |           should investigate a given problem in any branch of inquiry,
15     II, 11|           what is false, but not the problem proposed. For if A belongs
16     II, 11|       impossible conclusion, but the problem in hand is not proved. Suppose
17     II, 12|         which is impossible: but the problem in hand is not proved. For
18     II, 13|         which is impossible: but the problem in hand is not proved: for
19     II, 13|              A belongs to all B, the problem is not proved.~But this
20     II, 14|              the first, whatever the problem may be. Whenever the syllogism
21     II, 14|           figures through which each problem will be solved. It is clear
22     II, 16|           failure to demonstrate the problem proposed; but this happens