Logic; Or, The Analytic of Explicit Reasoning |
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Page xiii
... ILLICIT ASSUMPTION OF PREMISES ( Petitio Principii ) · CHAPTER XII PAGE . 149 157 168 · 175 MISTAKING THE ISSUE AND IRRELEVANT CONCLUSION ( Ignoratio Elenchi ) CHAPTER XIII ILLICIT CONVERSIONS • CHAPTER XIV ILLICIT SUBSTITUTIONS OF ...
... ILLICIT ASSUMPTION OF PREMISES ( Petitio Principii ) · CHAPTER XII PAGE . 149 157 168 · 175 MISTAKING THE ISSUE AND IRRELEVANT CONCLUSION ( Ignoratio Elenchi ) CHAPTER XIII ILLICIT CONVERSIONS • CHAPTER XIV ILLICIT SUBSTITUTIONS OF ...
Page 118
... illicit process of the Minor term ; or as in the following syllo- gism : Y is X , Z is not Y .. Z is not X , — Anglo - Saxons love liberty , Frenchmen are not Anglo - Saxons ... Frenchmen do not love liberty , which is an illicit ...
... illicit process of the Minor term ; or as in the following syllo- gism : Y is X , Z is not Y .. Z is not X , — Anglo - Saxons love liberty , Frenchmen are not Anglo - Saxons ... Frenchmen do not love liberty , which is an illicit ...
Page 139
... to him that all these fallacies are simply cases of illicit substitution ; which can be readily shown . Thus , e . g . , the fallacy of an ambiguous middle term ( Quarternio Terminorum ) consists simply in the THE RULES OF LOGIC 139.
... to him that all these fallacies are simply cases of illicit substitution ; which can be readily shown . Thus , e . g . , the fallacy of an ambiguous middle term ( Quarternio Terminorum ) consists simply in the THE RULES OF LOGIC 139.
Page 140
... illicit substitution of species for genus in the predicate of an affirmative proposition ( i . e . , X for Y in the minor premise ) . In the case of illicit process of the minor term , as , e . g . , " Y is not X , some Z is Y .. Z is ...
... illicit substitution of species for genus in the predicate of an affirmative proposition ( i . e . , X for Y in the minor premise ) . In the case of illicit process of the minor term , as , e . g . , " Y is not X , some Z is Y .. Z is ...
Page 143
... ILLICITLY A proposition that is obviously untrue , or that can , on logical principles , be affirmatively shown to be ... Illicit Premises . Rule IV . PREMISES TO CORRESPOND TO THE THESIS OR ISSUE . In all ratiocination - if designed to ...
... ILLICITLY A proposition that is obviously untrue , or that can , on logical principles , be affirmatively shown to be ... Illicit Premises . Rule IV . PREMISES TO CORRESPOND TO THE THESIS OR ISSUE . In all ratiocination - if designed to ...
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Common terms and phrases
¹ See Appendix accident affirmative proposition analysis animal apodictic applied argument Aristotle assumed called the Fallacy class denoted common commonly concepts or notions consists constitute contradictory conversion copula corresponding defined definition distinction distinguished division doctrine equal equation equivalent Equivocation error essential example exclusively fact FALLACIES IN DICTIONE Fallacy of Accident Fallacy of Composition Fallacy of Division false fictitious formal former genus gism Hence Hobbes Ignoratio Elenchi illicit assumption illicit substitution included individuals inference Irrelevant Conclusion judgment kind knowledge lacies language latter Laws of Thought logical processes logicians mankind Material Fallacies mathematical meaning middle term minor premise Moral Sciences nature negative nonsensical notions or concepts observed obviously opinions political predicate principle quasi-things ratiocination rational regarded relations of terms RIGHT REASONING rules Secundum Quid sense simply Sovereignty species syllogism theory things thought tion true truth utility Whately words Y is X
Popular passages
Page 90 - If two triangles have two sides of the one equal to two sides of the...
Page 170 - is the science of the operations of the understanding which are subservient to the estimation of evidence; both the process itself of proceeding from known truths to unknown, and all other intellectual operations in so far as auxiliary to this.
Page 131 - By what steps we are to proceed in these is to be learned in the schools of the mathematicians, who from very plain and easy beginnings, by gentle degrees, and a continued chain of reasonings, proceed to the discovery and demonstration of truths that appear at first sight beyond human capacity.
Page 222 - He was bred to the law, which is, in my opinion, one of the first and noblest of human sciences ; a science which does more to quicken and invigorate the understanding, than all the other kinds of learning put together ; but it is not apt, except in persons very happily born, to open and to liberalize the mind exactly in the same proportion.
Page 16 - And the most part of men, though they have the use of reasoning a little way, as in numbering to some degree, yet it serves them to little use in common life, in which they govern themselves, some better, some worse according to their differences of experience, quickness of memory, and inclinations to several ends; but specially according to good or evil fortune, and the errors of one another. For as for 'science,' or certain rules of their actions, they are so far from it that they know not what...
Page 216 - A servant who was roasting a stork for his master, was prevailed upon by his sweetheart to cut off a leg for her to eat. When the bird came upon table, the master desired to know what was become of the other leg. The man answered, that storks had never more than one leg.
Page 219 - For some part of the inestimable benefit of that book has, merely on account of its title, reached to many thousands more than, I fear, it would have done, had he called it (what it is merely) a grammatical Essay, or a Treatise on Words or on Language.
Page 221 - But when they knew that he was a Jew, all with one voice about the space of two hours cried out, Great is Diana of the Ephesians.
Page 215 - But I have understanding as well as you; I am not inferior to you: yes, who knows not such things as these?
Page 18 - First, I say, you must not despond, Athenians, under your present circumstances, wretched as they are; for that which is worst in them as regards the past is best for the future. What do I mean? That your affairs are amiss, men of Athens, because you do nothing...