Picture LogicLongmans, Green, 1887 - 188 páginas |
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... speak of its difficulty ? How if the momentous question , ' Was I possessed of a " turn " for Logic ? ' should be an- swered in the negative ; and I fell asleep to dream of mysterious figures , numbers , and symbols on the one hand ...
... speak of its difficulty ? How if the momentous question , ' Was I possessed of a " turn " for Logic ? ' should be an- swered in the negative ; and I fell asleep to dream of mysterious figures , numbers , and symbols on the one hand ...
Página 4
... speak , peculiar features and differences , qualities , or attri- butes , or whatever you choose to call them . What I mean is that they affect you differently as you hear , see , smell , touch , or taste them . Take one or two ...
... speak , peculiar features and differences , qualities , or attri- butes , or whatever you choose to call them . What I mean is that they affect you differently as you hear , see , smell , touch , or taste them . Take one or two ...
Página 7
... thought ? and secondly , why should men care to draw these generalisations that you speak of ? ' ' Of thought more anon , ' replied our tutor ; ' as to the generalisations , you must recall to your memory WHAT IS SCIENCE ? 7.
... thought ? and secondly , why should men care to draw these generalisations that you speak of ? ' ' Of thought more anon , ' replied our tutor ; ' as to the generalisations , you must recall to your memory WHAT IS SCIENCE ? 7.
Página 8
... speak to - morrow . ' That day we went for a lovely walk , Dyver seem- ing buried in meditations of future knots for logical solution , and whether it was that I over - tired myself , or whether it was through working a brain usually ...
... speak to - morrow . ' That day we went for a lovely walk , Dyver seem- ing buried in meditations of future knots for logical solution , and whether it was that I over - tired myself , or whether it was through working a brain usually ...
Página 14
... speak of the arts as we do of the sciences , meaning thereby branches of one great art and branches of one great science . By science I establish the law , for instance , that " all trees bud in the spring . " Now supposing I were able ...
... speak of the arts as we do of the sciences , meaning thereby branches of one great art and branches of one great science . By science I establish the law , for instance , that " all trees bud in the spring . " Now supposing I were able ...
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Términos y frases comunes
accidens AEIO affirmative antecedent apple dumpling applied argument ASEBINOP asked Dyver attri attributes birds Black Watch butes called cause CHAPTER common terms conclusion connotation CONNOTATION AND DENOTATION conversion copula correct thoughts costermonger Cretans are liars deductive definition denotation differ differentia distribute DISTRIBUTION OF TERMS divided division express fallacies four figures genus give horse Hypothetical Syllogisms Illicit Minor individuals induction inductive inference instance jests at scars kinds Logic is deep logician look major premiss MAJOR TERM matter of thought mean middle term mood negative obey observation particular facts particular premisses phenomena phenomenon point of view predicate prove qualities question rational animal Rectilineal Figures remarks and inferences remember replied rules science and art sense simple singular term Socrates Sorites speak species sponge is damp things tion tree Triangles true true women truth undistributed universal knowledge universal propositions valid Violates women words دو وو
Pasajes populares
Página 174 - If two or more instances in which the phenomenon occurs have only one circumstance in common, while two or more instances in which it does not occur have nothing in common save the absence of that circumstance, the circumstance in which alone the two sets of instances differ is the effect, or the cause, or an indispensable part of the cause of the phenomenon.
Página 174 - If an instance in which the phenomenon under investigation occurs, and an instance in which it does not occur, have every circumstance in common save one, that one occurring only in the former; the circumstance in which alone the two instances differ is the effect, or the cause, or an indispensable part of the cause, of the phenomenon.
Página 175 - Subduct from any phenomenon such part as is known by previous inductions to be the effect of certain antecedents...
Página 175 - Whatever phenomenon varies in any manner whenever another phenomenon varies in some particular manner, is either a cause or an effect of that phenomenon, or is connected with it through some fact of causation.
Página 117 - Here, then, is another point in which these triplets of propositions, called syllogisms, may differ. And as syllogisms differ in mood according to the arrangement of their propositions, so they differ in figure according to the position of the middle term in those propositions. There can only be four figures. Where the middle term is subject in the major and predicate in the minor premiss, where it is predicate in both, where it is subject in both, and where it is predicate and subject ; eg, take...
Página 135 - ... negative minor in the first figure (contrary to canon). ' [If asked (as possibly you might be) what is the regressive or Goclenian Sorites, remember it is the reverse of the above. Begin with the last premiss and write the train from last to first, and keep the old conclusion, eg, All D is E, All 0 is D, All B is C, All A is B, .-.All A is E. ' The rules are reversed, too ; only one premiss particular, the last ; only one negative, the first (the same propositions being negative and particular...
Página 38 - the science of the necessary forms of thought," and so it has been called a " formal science ; " for, as we have seen, Logic is only concerned with the forms or modes in which people think as opposed to the matter. It has also been called " the art of thinking," ie the application of universal laws to particular thoughts; and the universal laws imply the existence of science. Lastly, it has been well defined as "the science of the conditions on which correct thoughts depend, and the art of attaining...
Página 24 - A thing cannot both be and not be. 3. The Law of Duality. A thing must either be or not be.
Página 134 - All A is B All B is C All C is D All D is E .'. 'All A is E 20.
Página 128 - All men are mortal, . • . Socrates is mortal," or " All men are mortal and Socrates is a man." The order of the first two in conversation would be " Socrates is mortal, because he is a man," and " Socrates is mortal, because all men are so.