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 1 6 |         propositions are said to be contradictory which have the same subject
 2 7 |         which I denote by the term "contradictory", when, while the subject
 3 7 |          every man is white" is the contradictory of the denial "not every
 4 7 |             no man is white" is the contradictory of the proposition "some
 5 7 |          contrary are distinct from contradictory propositions and which the
 6 9 |           law that of every pair of contradictory propositions, whether they
 7 9 |          have not actually made the contradictory statements. For it is manifest
 8 9 |           In the case, also, of two contradictory propositions this holds
 9 10|           correct. This last is the contradictory, the former the contrary.
10 10|           not man is just", and the contradictory of this, are not equivalent
11 10|        there would be more than one contradictory to the same proposition,
12 10|          proposition has one proper contradictory and one only. For of the
13 10|           is white" the appropriate contradictory is "man is not white", and
14 10|           meaning be different, the contradictory will either be "white is
15 10|          the former of these is the contradictory of the proposition "white
16 10|          the latter of these is the contradictory of the proposition "man
17 12|     composite expressions those are contradictory each to each which have
18 12|         form respectively. Thus the contradictory of the proposition "man
19 12|           not "not-man is", and the contradictory of "man is white" is "man
20 12|             same function. Thus the contradictory of "man walks" is "man does
21 12|         this rule is universal, the contradictory of "it may be" is may not
22 12|         since it is impossible that contradictory propositions should both
23 12|           it may not be" is not the contradictory of "it may be". For it is
24 12|         must choose the latter.~The contradictory, then, of "it may be" is "
25 12|             that it should be"; the contradictory of this is "it is not contingent
26 12|           or were not the case.~The contradictory, then, of "it may not be"
27 12|             cannot not be", and the contradictory of "it may be" is not "it
28 12|            two propositions are not contradictory, the same thing both may
29 12|             same time, for they are contradictory. Nor can the propositions "
30 12|             the same principle. The contradictory of "it is necessary that
31 12|         that it should be", and the contradictory of "it is necessary that
32 12|          should not be".~Again, the contradictory of "it is impossible that
33 12|         that it should be", and the contradictory of "it is impossible that
34 12|     consider the following pairs as contradictory propositions:~It may be.
35 13|            follow respectively from contradictory propositions, and the contradictory
36 13| contradictory propositions, and the contradictory propositions belong to separate
37 13|           it is impossible that the contradictory propositions predicating
38 13|            it should not be" is the contradictory of that which follows from
39 13|             should not be", and the contradictory of this is the proposition "
40 13|              Thus in this case also contradictory propositions follow contradictory
41 13|   contradictory propositions follow contradictory in the way indicated, and
42 13|             should be". If not, the contradictory must follow, namely that
43 13|       maintain that this is not the contradictory, then the proposition "it
44 14|        judgement, but that which is contradictory is the more truly contrary,
45 14|           is not good.~Further, the contradictory is either always the contrary
46 14|                no man is good". The contradictory propositions, on the other