Logic, Or, The Art of Reasoning Simplified: In this Work Remarks are Made on Intuitive and Deductive Evidence ...R. Davis, 1837 - 323 páginas |
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Términos y frases comunes
according affirmed or denied analogy antecedent argument axiom birds are animals Cæsar called certainty CHAP Christian Cloven feet common comprehension conclusion consequence constitution contained conversion conviction copula deciduous deduced deductive evidence definition demonstration distinct distributes the subject employed enthymeme equal essential difference Euclid example exist expressed faculties fallacy fallacy of division false figure fixed body genus gism hypothetical syllogisms ideas ignoratio elenchi illicit process implies individual induction infer inferential INTERROGATORY EXAMINATION intuitive evidence judgment kind Logic logicians luminous bodies major premiss major term mathematical matter middle term mind minor term mnemonic mode mood moral nature necessary object opposition Oviparous particular affirmative perceived planet predicate principle proof proved quadruped rational reduced rules sense signify sion species star subaltern subject and predicate syllogistic thing tion true truth undistributed middle universal affirmative universal proposition universal term Whately whole words
Pasajes populares
Página 124 - the Heavens declare the glory of God; and the firmament sheweth his handy work. Day unto day uttereth speech, and night unto night sheweth knowledge. There is no speech nor language where their voice is not heard. Their line is gone out through all
Página 124 - unto night sheweth knowledge. There is no speech nor language where their voice is not heard. Their line is gone out through all the earth, and their words to the. end of the world."*
Página 96 - predicated, (ie affirmed or denied} universally of any class of things, may be predicated, in like manner, (viz. affirmed or denied,) of any thing comprehended in that class." This is the principle, commonly called the dictum de omni et nullo, for the establishment of which we are indebted to Aristotle, and which is the
Página 34 - compared to some adulterated compound: it consists of an ingenious mixture of truth and falsehood, so entangled, so intimately blended, that the falsehood is, in the chemical phrase, held in solution: one drop of sound logic is that test which immediately disunites them, makes the foreign substance visible, and precipitates it to the bottom.
Página 8 - nautical art. A physician again, will perhaps contemn systems of political economy, of logic or metaphysics, and insist on the superior wisdom of trusting to common sense in such matters, but he would never approve of trusting to common sense in the treatment of diseases. Neither again would the architect recommend a reliance on
Página 297 - The relation of other modes may certainly be perceived, as well as those of number and extension, and I cannot see why they should not also be capable of demonstration, if due methods were thought on to examine or pursue their agreement or disagreement.
Página 132 - become more and more sceptical ; and at length the reader is told, to his infinite pleasure and emolument, that the understanding, acting alone, does entirely subvert itself, and leaves not the lowest degree of evidence in any proposition
Página 157 - arises from the comparison of ideas, and from the discovery of such relations as are unalterable so long as the ideas continue the same; but the only relations of this kind are resemblance, proportion in quantity and number, degrees of any quality, and contrariety.
Página 277 - there is no fallacy more common, or more likely to deceive, than the one now before us ; the form in which it is most usually employed, is to establish some truth separately, concerning each single member of a certain class; and thence to infer the same of the whole collectively
Página 194 - Several of them are known to revolve round their axis, like the earth, and by that means must have a like succession of day and night. Some of them have moons, that serve to give them light in the absence of the sun, as