Book, Chapter

 1   2,  31|       among which the science of reasoning and that of number are the
 2   2,  31|        the chief. The science of reasoning is of very great service
 3   2,  31|          sophisms, inferences in reasoning that are false, and yet
 4   2,  31|          also valid processes of reasoning which lead to false conclusions,
 5   2,  31|  propositions, the laws of valid reasoning may easily be learnt in
 6   2,  32|          upon this rule that the reasoning I have quoted from the Apostle
 7   2,  32| reference to the validity of the reasoning, not to the truth of the
 8   2,  33|      drawn by a valid process of reasoning, in order that he whose
 9   2,  39|      except also the sciences of reasoning and of number. And in regard
10   2,  39|          regard to the theory of reasoning; but it seems to me it cannot,
11   3,  30|       and after much and various reasoning, arrives at the conclusion
12   4,   4|       that are doubtful requires reasoning and the exhibition of proofs.
13   4,  20|        discussed and solved, the reasoning is extended to such a length,