The Elements of Deductive Logic: Designed Mainly for the Use of Junior Students in the Universities |
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Page ix
... . The object of this change is to suggest to the student the importance of distinguishing the results from the processes by which they are gained . Many words employed in Logic and Psychology admit of both PREFACE . ix.
... . The object of this change is to suggest to the student the importance of distinguishing the results from the processes by which they are gained . Many words employed in Logic and Psychology admit of both PREFACE . ix.
Page x
... employed in Logic and Psychology admit of both these meanings , and it is only by prefixing the indefinite article or using the plural number , as when we speak of a definition ' or ' definitions , ' that we can make it plain that we ...
... employed in Logic and Psychology admit of both these meanings , and it is only by prefixing the indefinite article or using the plural number , as when we speak of a definition ' or ' definitions , ' that we can make it plain that we ...
Page 4
... employed the expression ' act or operation , ' avoiding the expression ' power or faculty , ' as the latter implies a theory of mental phenomena which would be rejected by many psychologists . It has been necessary to speak of act or ...
... employed the expression ' act or operation , ' avoiding the expression ' power or faculty , ' as the latter implies a theory of mental phenomena which would be rejected by many psychologists . It has been necessary to speak of act or ...
Page 13
... employing the indicative mood and introduced by the word ' that , ' infinitive moods , some instances of adjectives and ... employed both as the subject and as the predicate of a proposition . There remains one other class of terms , viz ...
... employing the indicative mood and introduced by the word ' that , ' infinitive moods , some instances of adjectives and ... employed both as the subject and as the predicate of a proposition . There remains one other class of terms , viz ...
Page 14
... employed as predicates of propositions . Attributives alone cannot be employed as subjects . We have thus divided terms into singular , collective , and common terms , attributives , and abstract terms . It must however be borne in mind ...
... employed as predicates of propositions . Attributives alone cannot be employed as subjects . We have thus divided terms into singular , collective , and common terms , attributives , and abstract terms . It must however be borne in mind ...
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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,...