Institutes of LogicW. Blackwood and sons, 1885 - 551 sider |
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Side 2
... possible , " says Aristotle , " to know first things , neither can we know , either absolutely or properly , things which result from these , but by hypothesis , if these exist . All science is not demonstrative , but the science of the ...
... possible , " says Aristotle , " to know first things , neither can we know , either absolutely or properly , things which result from these , but by hypothesis , if these exist . All science is not demonstrative , but the science of the ...
Side 4
... . Formal Logic is the science of the laws of possible , consistent , and necessarily connected thinking , or of harmony and of necessary implication in thinking . § 10. But knowledge , true knowledge , of experience 4 INSTITUTES OF LOGIC .
... . Formal Logic is the science of the laws of possible , consistent , and necessarily connected thinking , or of harmony and of necessary implication in thinking . § 10. But knowledge , true knowledge , of experience 4 INSTITUTES OF LOGIC .
Side 10
... possible , without demonstration , to syllogise from what are true , but we cannot do so from things necessary except by demonstration , for this is now ( the essence ) of demonstration . . . . It is possible to syllogise the necessary ...
... possible , without demonstration , to syllogise from what are true , but we cannot do so from things necessary except by demonstration , for this is now ( the essence ) of demonstration . . . . It is possible to syllogise the necessary ...
Side 43
... possible matter of thought . § 58. It seems to me that the whole of Ueberweg's reason- ing on this point is really guided by extra - logical considera- tions . He holds a certain metaphysical doctrine of the truth or agreement of ...
... possible matter of thought . § 58. It seems to me that the whole of Ueberweg's reason- ing on this point is really guided by extra - logical considera- tions . He holds a certain metaphysical doctrine of the truth or agreement of ...
Side 45
... possible ques- tions , which may be raised regarding their origin , nature , and relations to their materials or contents , considered as objects of actual reality . § 60. The value of Ueberweg's doctrine lies in drawing attention to ...
... possible ques- tions , which may be raised regarding their origin , nature , and relations to their materials or contents , considered as objects of actual reality . § 60. The value of Ueberweg's doctrine lies in drawing attention to ...
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Vanlige uttrykk og setninger
absolutely abstract actual affirmative animal antecedent applied Aristotle assertion attribute biped Boethius called cause common Comprehension conceived concept conclusion consciousness consequent contains contradiction contradictory contrary conversion copula definite deny determined disjunctive distinction doctrine Enthymeme essential exclusion existence experience expression Extension fact fallacy false Figure formal formal fallacies generalisation genus gism given ground Hamilton Hegel hypothetical immediate inference individual object Induction intuition judgment knowledge law of Identity law of Non-Contradiction laws of thought logicians major premiss mark matter means middle term Mill moods nature necessarily necessary negation negative Non-Contradiction notion Occam opposition organised Organon particular phænomenon plant positive possible Prantl predicate principle properly proposition quantity reality reasoning recognised reference regarded relation rule sense sentient simply singular Socrates speak species sphere subject and predicate sublate supposed Syllogism thing thought tion triangle true truth Ueberweg universal valid whole wholly words
Populære avsnitt
Side 215 - Tis not because the ring they ride, And Lindesay at the ring rides well, But that my sire the wine will chide If 'tis not fill'd by Rosabelle.
Side 473 - If two or more instances of the phenomenon under investigation have only one circumstance in common, the circumstance in which alone all the instances agree is the cause (or effect) of the given phenomenon.
Side 475 - 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.
Side 474 - 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.
Side 478 - 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.
Side 62 - Thought is the knowledge of a thing through a Concept or General Notion, or of one Notion through another. In Thought, all that we think about is considered either as something containing, or as something contained; — in other words, every process of Thought is only a cognition of the necessary relations of our Concepts. This being the case, it need not move our wonder that Logic, within its proper sphere...