Logic, Volum 1Longmans, Green, Reader, & Dyer, 1870 |
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abstract Algebra animals applied Aristotle attributes axiom bodies called canons Chemistry classification co-exist coincidence colour common conclusion Concrete Sciences connotation consciousness consists contains contrariety contrary conversion copula Deductive Deductive Reasoning definite disjunction Disjunctive Proposition distinction division equal equation equivalent example experience expressed extension fact fallacy fallible Figure force formal fundamental G. C. Lewis genus gism give given gods gravity ground Hamilton human identical individual Induction instances intuitive kings knowledge language Laws of Thought Logic logicians major premise Mathematics matter meaning mediate men are mortal ment mental middle term mind minor term mode moods Morgan mortal nature negation negative not-X not-Y notion object obverse operation opposition particular planets position predicate present principle properties quantity reasoning regards rules species substance supposed syllogism syllogistic symbols things tion true truth universal affirmative universal predicate universal proposition verbal proposition wise word
Passatges populars
Pàgina 178 - If our intellectual part is common, the reason also, in respect of which we are rational beings, is common: if this is so, common also is the reason which commands us what to do, and what not to do; if this is so, there is a common law also; if this is so, we are fellowcitizens; if this is so, we are members of some political community; if this is so, the world is in a manner a state.
Pàgina 178 - The general object which all laws have, or ought to have, in common, is to augment the total happiness of the community; and therefore, in the first place, to exclude, as far as may be, everything that tends to subtract from that happiness: in other words, to exclude mischief.
Pàgina 263 - The Bodies, or external objects which excite certain of those feelings, together with the powers or properties whereby they excite them ; these latter (at least) being included rather in compliance with common opinion, and because their existence is taken for granted in the common language from which I cannot prudently deviate, than because the recognition of such powers or properties as real existences appears to be warranted by a sound philosophy.
Pàgina 217 - The square described on the hypothenuse of a rightangled triangle is equal to the sum of the squares described on the other two sides.
Pàgina 273 - ... of venturing upon the untrodden land of future possibility. The fact, generally expressed as nature's uniformity, is the guarantee, the ultimate major premise, of all induction. " What has been, will be," justifies the inference that water will assuage thirst in after times.
Pàgina 274 - that what has uniformly been in the past, will be in the future/' is one of them. And it is essential to the physicist. He cannot take a step without it. Dr. Bain well calls it " the one ultimate premiss of all induction." But Mr. Spencer does not recognize the faculty of intuition. In truth it is incompatible with his doctrine of The Unknowable. The primordial...
Pàgina 188 - The language of ratiocination would, I think, be brought into closer agreement with the real nature of the process, if the general propositions employed in reasoning, instead of being in the form All men are mortal, or Every man is mortal, were expressed in the form Any man is mortal. This mode of expression, exhibiting as the type of all reasoning from experience ' ' The men A, B, C, &c. are so and so, therefore any man is so and so...
Pàgina 54 - The essential Relativity of all knowledge, thought or consciousness cannot but show itself in language. If everything that we can know is viewed as a transition from something -eise, every experience must have two sides; and either every name must have a double meaning, or else for every meaning there must be two names.
Pàgina 178 - But all punishment is mischief: all punishment in itself is evil. Upon the principle of utility, if it ought at all to be admitted, it ought only to be admitted in as far as it promises to exclude some greater evil.