Book, Paragraph

 1      I,  4 |      elements turn out to be four, all told, namely either
 2      I,  9 |      predicates in which the four orders in question are found.
 3      I,  13| supplied with reasonings are four: (1) the securing of propositions; (
 4      I,  14|      elements of bodies were four": for any one might assent
 5     II,  7 |  each other in six ways, and four of these conjunctions constitute
 6     II,  7 |      a defect. But the other four all constitute a contrariety.
 7     II,  8 |      modes of opposition are four in number, you should look
 8     II,  10|    greater degrees there are four commonplace rules. One is:
 9    III,  6 |      is knowledge, there are four ways of demolishing it:
10      V,  1 | either to two problems or to four. For if he at the same time
11      V,  1 |    other, there will then be four problems; as in the case
12      V,  1 |    arising are either two or four, or that arguments in regard
13      V,  5 |      or actually, as "having four fingers" belongs to a particular
14      V,  5 |      the man’s possession of four fingers. So he errs if he
15   VIII,  1 |      other than these are of four kinds; they serve either
16   VIII,  10|  eyes open or not.~There are four possible ways of preventing
17   VIII,  10|  There are then, as we said, four ways of making objections:
18   VIII,  12|      is called fallacious in four senses: (1) when it appears