An Introductory Logic |
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Common terms and phrases
affirmative affirming the consequent already analogy analysis antecedent argument Aristotle assertion categorical categorical proposition causally connected cause CHAPTER character complete conception conclusion consequent contradictory contrapositive course defined definition determine discover disjunctive disjunctive proposition disjunctive syllogism distinction distributed employed enumeration essential Euathlus example exist experience explain expressed F. H. Bradley fallacy Fallacy of Accident false figure genus hypothesis hypothetical hypothetical syllogism ideas illicit major individual Induction inductive reasoning inference interpretation investigation J. S. Mill judgment knowledge logical major premise matter means ment merely metal method middle term mind nature necessary negative objects observation obtain Obversion phenomena phenomenon plant possible principle propo proposition qualities quantity question reasoning reference regarded relation represent result rules scientific simply sition statement subject and predicate supposed syllogism syllogistic theory things thinking thought tion tive true truth universal usually various whole words
Popular passages
Page 250 - 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...
Page 441 - No reason can be given why the general happiness is desirable, except that each person, so far as he believes it to be attainable, desires his own happiness. This, however, being a fact, we have not only all the proof which the case admits of, but all which it is possible to require, that happiness is good: that each person's happiness is a good to that person, and the general happiness, therefore, a good to the aggregate of all persons.
Page 239 - 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.
Page 61 - A non-connotative term is one which signifies a subject only, or an attribute only. A connotative term is one which denotes a subject, and implies an attribute.
Page 461 - Nothing is demonstrable, unless the contrary implies a contradiction. Nothing, that is distinctly conceivable, implies a contradiction. Whatever we conceive as existent, we can also conceive as non-existent. There is no being, therefore, whose non-existence implies a contradiction.
Page 443 - A man that hath no virtue in himself ever envieth virtue in others. For men's minds will either feed upon their own good or upon others...
Page 282 - We spent many hours in Cwm Idwal, examining all the rocks with extreme care, as Sedgwick was anxious to find fossils in them; but neither of us saw a trace of the wonderful glacial phenomena all around us; we did not notice the plainly scored rocks, the perched boulders, the lateral and terminal moraines. Yet these phenomena are so conspicuous that, as I declared...
Page 169 - It is the man of God, who was disobedient unto the word of the LORD : therefore the LORD hath delivered him unto the lion, which hath torn him, and slain him, according to the word of the LORD, which he spake unto him. 27 And he spake to his sons, saying, Saddle me the ass. And they saddled him.
Page 117 - No term must be distributed in the conclusion which was not distributed in one of the premises...
Page 397 - Given for one instant an intelligence which could comprehend all the forces by which nature is animated and the respective positions of the beings...