Book, Paragraph

 1      I, 13|      of a simple statement. We proceed to discuss that which is
 2      I, 17| altered, the proof will always proceed through the same terms.
 3      I, 21|     particular, the proof will proceed by a reductio ad impossibile.
 4      I, 25|       every demonstration will proceed through three terms and
 5      I, 25|       and every syllogism will proceed through three terms only.~
 6      I, 28|   question: for all syllogisms proceed through these. But if we
 7      I, 28|        that all the syllogisms proceed through the aforesaid figures.
 8      I, 28|    Clearly then all syllogisms proceed through the aforesaid figures,
 9      I, 29| syllogisms, I mean those which proceed by substitution, or by positing
10      I, 29|         and the syllogism will proceed through terms arranged in
11     II, 6 |   possible. But the proof will proceed as in the universal syllogisms,
12     II, 10|       second figure syllogisms proceed through the first and the
13     II, 11|        belongs to no B. We may proceed in the same way if the proposition
14     II, 13|       all the syllogisms which proceed per impossibile the contradictory
15     II, 15|   white and not white", and we proceed "man is an animal". Either