The Problem of Logic |
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Page 20
... precisely suit the occasion . The only way in which to make definition relevant is to select for ourselves the kindred terms with which the term in question is in risk of being confused , and then to note , from the point of view that ...
... precisely suit the occasion . The only way in which to make definition relevant is to select for ourselves the kindred terms with which the term in question is in risk of being confused , and then to note , from the point of view that ...
Page 35
... precisely similar sense . There can be no shepherd unless there are sheep to be herded and tended , but there can be sheep without a shepherd . So , again , a third implies a first and a second , but these do not imply a third . Hence ...
... precisely similar sense . There can be no shepherd unless there are sheep to be herded and tended , but there can be sheep without a shepherd . So , again , a third implies a first and a second , but these do not imply a third . Hence ...
Page 44
... precisely attained . In this process each sub- differentiation , or subdivision , should help to develop , more and yet more distinctly , that one indeterminate aspect of the genus of which the differentiation was the original aim in ...
... precisely attained . In this process each sub- differentiation , or subdivision , should help to develop , more and yet more distinctly , that one indeterminate aspect of the genus of which the differentiation was the original aim in ...
Page 49
... precisely means that colour is either red 6 * Aristotle long ago pointed out that our - av @ pwTos was not properly a name at all ; and he perhaps extended his countenance too much to it when he said that , if we were to call it ...
... precisely means that colour is either red 6 * Aristotle long ago pointed out that our - av @ pwTos was not properly a name at all ; and he perhaps extended his countenance too much to it when he said that , if we were to call it ...
Page 50
... precisely a specification of this indeterminate generic idea . A ' negative ' con- ception affords , therefore , as sound a basis for subdivision as does a positive or definite conception . It is just as sound to specify ' land used for ...
... precisely a specification of this indeterminate generic idea . A ' negative ' con- ception affords , therefore , as sound a basis for subdivision as does a positive or definite conception . It is just as sound to specify ' land used for ...
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Common terms and phrases
abstract accepted affirmative Algol antecedent apodeictic application argument Aristotle assertion called categorical proposition causal cause Classification concept conclusion concrete connexion connotation connotation and denotation consider Contradiction contradictory Contrapositive copula Deductive Deductive Inference defined definition differentia disjunctive proposition distinction division effect Enthymeme Enumerative Induction Epimenides essential exclusive expressed fact fallacy Formal given Hence hypothesis ibid ideal Identity implied important indeterminate Inductive Inference instance interest is-not J. S. Mill judgment kind Laws of Thought limited major premiss meaning Method Mill Mill's nature negative Novum Organum object observation particular plants point of view possible postulate precisely predicate principle purpose question rational animal reason reference rejected relation relevant Rule S's are P's S's are-not P's Science scientific sense singular Sorites species statement subaltern subject-term summum genus Syllogism term tion triangle true truth undistributed universal valid verification vide word
Popular passages
Page 315 - I have steadily endeavoured to keep my mind free so as to give up any hypothesis, however much beloved (and I cannot resist forming one on every subject), as soon as facts are shown to be opposed to it.
Page 391 - I had, also, during many years followed a golden rule, namely, that whenever a published fact, a new observation or thought came across me, which was opposed to my general results, to make a memorandum of it without fail and at once; for I had found by experience that such facts and thoughts were far more apt to escape from the memory than favorable ones.
Page 283 - The only proof capable of being given that an object is visible, is that people actually see it; the only proof that a sound is audible, is that people hear it: and so of the other sources of our experience.
Page 456 - The uniformity in the succession of events, otherwise called the law of causation, must be received not as a law of the universe, but of that portion of it only which is within the range of our means of sure observation, with a reasonable degree of extension to adjacent cases.
Page 378 - That which is necessary, that which must be, means that which will be, whatever supposition we may make in regard to all other things.
Page 417 - 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.
Page 314 - I worked on true Baconian principles, and without any theory collected facts on a wholesale scale...
Page 386 - The total energy of any material system is a quantity which can neither be increased nor diminished by any action between the parts of the system, though it may be transformed into any of the forms of which energy is susceptible.
Page 314 - I happened to read for amusement ' Malthus on Population,' and being well prepared to appreciate the struggle for existence which everywhere goes on from long-continued observation of the habits of animals and plants, it at once struck me that under these circumstances favourable variations would tend to be preserved, and unfavourable ones to be destroyed. The result of this would be the formation of new species. Here then I had at last got a theory by which to work...
Page 377 - It may therefore safely be laid down as a truth both obvious in itself, and admitted by all whom it is at present necessary to take into consideration, that, of the outward world, we know and can know absolutely nothing, except the sensations which we experience from it.