The elements of deductive logic |
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Page vii
... noticed at all , are only alluded to in the text . They may be omitted on the first reading . Besides the Notes appended to the various Chapters , it is perhaps desirable that the student , if he is entirely unacquainted with logical ...
... noticed at all , are only alluded to in the text . They may be omitted on the first reading . Besides the Notes appended to the various Chapters , it is perhaps desirable that the student , if he is entirely unacquainted with logical ...
Page x
... noticed by Mr. Grove ( Correlation of Forces , 5th Ed . , p . 251 ) . " Another confusion of terms has arisen , and has , indeed , much embar- rassed me in enunciating the propositions put forth in these pages , on account of the ...
... noticed by Mr. Grove ( Correlation of Forces , 5th Ed . , p . 251 ) . " Another confusion of terms has arisen , and has , indeed , much embar- rassed me in enunciating the propositions put forth in these pages , on account of the ...
Page xii
... noticed in various parts of the book , but they have only been casually alluded to , not treated in distinct chapters . Logic has always been over - weighted with extraneous matter , and , wherever it is possible , it is desirable to ...
... noticed in various parts of the book , but they have only been casually alluded to , not treated in distinct chapters . Logic has always been over - weighted with extraneous matter , and , wherever it is possible , it is desirable to ...
Page xiv
... noticed by ordinary writers on the science . An Index and a Collection of Examples have been added to the present edition . It is perhaps superfluous to mention that a few of the Examples have been adopted from other books on Logic or ...
... noticed by ordinary writers on the science . An Index and a Collection of Examples have been added to the present edition . It is perhaps superfluous to mention that a few of the Examples have been adopted from other books on Logic or ...
Page 4
... noticed it in the text . Note 3 - We have 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 ...
... noticed it in the text . Note 3 - We have 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 ...
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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,...