The elements of deductive logic |
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Page xvii
... Ambiguity of Language IX . On Method , as applied to the Arrangement of Syllogisms in . 133 138 140 a Train of Reasoning EXAMPLES INDEX 147 151 . 169 ELEMENTS OF DEDUCTIVE LOGIC . INTRODUCTION . " CHAPTER I. CONTENTS . xvii.
... Ambiguity of Language IX . On Method , as applied to the Arrangement of Syllogisms in . 133 138 140 a Train of Reasoning EXAMPLES INDEX 147 151 . 169 ELEMENTS OF DEDUCTIVE LOGIC . INTRODUCTION . " CHAPTER I. CONTENTS . xvii.
Page 4
... mean either the operation or the result . This is an in- stance at the very outset of the ambiguity noticed in the paragraph at the end of the preface . CHAPTER II . Definition of Logic . IT is the 4 RELATION OF LOGIC TO PSYCHOLOGY .
... mean either the operation or the result . This is an in- stance at the very outset of the ambiguity noticed in the paragraph at the end of the preface . CHAPTER II . Definition of Logic . IT is the 4 RELATION OF LOGIC TO PSYCHOLOGY .
Page 8
... ambiguity of the Greek word λóyos , stands either for the internal thought or the external expression of it . ( See Hamilton's Lectures on Logic , Lecture I. ) CHAPTER IV . Division of the Products of Thought . 8 RELATION OF THOUGHT TO ...
... ambiguity of the Greek word λóyos , stands either for the internal thought or the external expression of it . ( See Hamilton's Lectures on Logic , Lecture I. ) CHAPTER IV . Division of the Products of Thought . 8 RELATION OF THOUGHT TO ...
Page 24
... ' and as opposed to ' denied . ' All ambiguity may be avoided by speaking of the predicate as predicated affirmatively or predicated negatively of the subject . CHAPTER II . On the Copula . THE Logical Copula 24 THE SUBJECT AND PREDICATE .
... ' and as opposed to ' denied . ' All ambiguity may be avoided by speaking of the predicate as predicated affirmatively or predicated negatively of the subject . CHAPTER II . On the Copula . THE Logical Copula 24 THE SUBJECT AND PREDICATE .
Page 83
... ambiguous middle . The neglect of it , palpable as it might be supposed to be , is often , espe- cially in a long course of reasoning , very difficult of de- tection , and is a fertile source of fallacy . We may adduce as very simple ...
... ambiguous middle . The neglect of it , palpable as it might be supposed to be , is often , espe- cially in a long course of reasoning , very difficult of de- tection , and is a fertile source of fallacy . We may adduce as very simple ...
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Common terms and phrases
abstract terms act or operation affirmed or denied ambiguity analysis argument Aristotle asserted attribute or group called CHAPTER collective term College common terms conclusion conjunctive consequently copula Crown 8vo deductive inference defined definition differentia disjunctive disjunctive proposition disjunctive syllogism distinction distinguish distributed distribution of terms division Edited employed English Euathlus fallacy formerly Fellow fourteenth legion genus gism group of attributes group of individuals human ignoratio elenchi immediate inference inasmuch incorrect thoughts induction instances language legitimate Logic logicians major premiss meaning minor Molière moods negative Note noticed older logicians ordinary Oriel College Oxford P. G. TAIT particular premiss permutation Philosophy poets predicate probably proposition reasoning rectilineal figure regarded relation Roman senate rules saw yesterday shews simply singular and collective singular or collective singular term Socrates species student subaltern subject and predicate substantive syllogism tenth legion term expressive tion true universal verb virtue
Popular passages
Page 115 - If A is B, C is D ; and if E is F, G is H ; But either C is not D, or G is not H ; Therefore either A is not B, or E is not F.
Page 137 - to allow every man an unbounded freedom of speech must always be, on the whole, advantageous to the State ; for it is highly conducive to the interests of the Community, that each individual should enjoy a liberty perfectly unlimited, of expressing his sentiments.
Page 62 - Thus, for" example, he to whom the geometrical proposition, that the angles of a triangle are together equal to two right angles...
Page 158 - In a higher world it is otherwise; but here below to live is to change, and to be perfect is to have changed often.
Page 143 - 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 5 - Logic is both a science and an art ; it is a science inasmuch as, by analyzing the elements, principles, and structure of arguments, it teaches us how to discover their truth or detect their fallacies, and point out the sources of such errors. It is an art, inasmuch as it teaches...
Page 99 - Barbara, Celarent, Darii, Ferioque, prioris; Cesare, Camestres, Festino, Baroko, secundae; Tertia, Darapti, Disamis, Datisi, Felapton, Bokardo, Ferison, habet ; Quarta insuper addit Bramantip, Camenes, Dimaris, Fesapo, Fresison.
Page 132 - ... which, as already noticed, is one case of the fallacy of ambiguous terms. Thus to argue, because there are certain points of resemblance between the development of the individual and the development of the race, that, therefore, since the individual dies, the race will probably die also, or, because there are certain points of resemblance between the earth and the other planets, that, therefore, the other planets are certainly, or very probably, inhabited, would both be instances of false analogy,...