The elements of deductive logic |
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Page v
... rules of Deductive Logic . They are not designed to save him the trouble of after- wards consulting more advanced text - books , either in his own or other languages . The English student who wishes to gain an exact and detailed ...
... rules of Deductive Logic . They are not designed to save him the trouble of after- wards consulting more advanced text - books , either in his own or other languages . The English student who wishes to gain an exact and detailed ...
Page xvi
... Rules , Reduc- tion , and the Special Rules of the Figures . IV . Trains of Reasoning ( the Sorites ) 80 80 85 8888 87 104 . 107 V. Complex ( Hypothetical ) Propositions and Syllogisms . § 1. Division of Complex Propositions into ...
... Rules , Reduc- tion , and the Special Rules of the Figures . IV . Trains of Reasoning ( the Sorites ) 80 80 85 8888 87 104 . 107 V. Complex ( Hypothetical ) Propositions and Syllogisms . § 1. Division of Complex Propositions into ...
Page 5
... rules for the attainment of correct thoughts and for the avoid- ance of incorrect thoughts . Thus Logic is both a Science and an Art . It is a Science , inasmuch as it furnishes us with a knowledge of what is , inasmuch as it is an ...
... rules for the attainment of correct thoughts and for the avoid- ance of incorrect thoughts . Thus Logic is both a Science and an Art . It is a Science , inasmuch as it furnishes us with a knowledge of what is , inasmuch as it is an ...
Page 16
... rule to precede abstract terms in their formation . Thus human , red , brave , good , willing , must have been employed before the corresponding terms humanity , redness , bravery , goodness , willingness . Note 3. - For the sake of ...
... rule to precede abstract terms in their formation . Thus human , red , brave , good , willing , must have been employed before the corresponding terms humanity , redness , bravery , goodness , willingness . Note 3. - For the sake of ...
Page 17
... rule , more familiar to us . Thus ' humanity ' can hardly fail to suggest to us the word ' human , ' from which it is formed , and ' human ' will suggest the word ' man , ' from the Latin equivalent of which it is also formed , and ...
... rule , more familiar to us . Thus ' humanity ' can hardly fail to suggest to us the word ' human , ' from which it is formed , and ' human ' will suggest the word ' man , ' from the Latin equivalent of which it is also formed , and ...
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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,...