Elements of Logic: Comprising the Doctrine of the Laws and Products of Thought, and the Doctrine of Method, Together with a Logical Praxis...C. Scribner, 1867 - 237 oldal |
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accordingly Affirmative antecedent Apodictic applied apprehended Aristotle Assertory attribute Bucephalus called Categorical Categorical Syllogism Causal Whole cept character complement complementary Comprehensive concept conclusion contains contradictory coördinate copula datum Deductive Reasoning Deductive Syllogism denote derived determined discourse discriminate Disjunctive Disjunctive Syllogism distinction distinguished division Enthymeme essential explicated expressed Extensive Quantity Faculty fallacy genus given Hypothetical identified Identity inasmuch individual Induction Intelligence Judg Judgment kind of Whole knowledge language Law of Identity Law of Thought logicians magnet Major term matter Mediate Reasoning ment middle term Minor term modality modes mortal movement of Thought nature necessarily necessary negative notion object of thought Objective Law opposition perfect Polysyllogism predicate premise primitive principle process of Thought product of Thought proposition pure quadruped Quality rational animal recognized regarded relation of Whole respect Socrates species Subjective Law sublate substance Subsumption Sumption synthesis thinking tion true truth valid Verbal virtue words
Népszerű szakaszok
69. oldal - is the attribution of signs to our cognitions of things. But as a cognition must have been already there, before it could receive a sign; consequently, that knowledge which is denoted by the formation and application of a word, must have preceded the symbol which denotes it.
70. oldal - You have all heard," says Sir William Hamilton, " of the process of tunnelling through a sandbank. In this operation it is impossible to succeed unless every foot, nay, almost every inch of our progress be secured by an arch of masonry before we attempt the excavation of another. Now language is to the mind precisely what the arch is to the tunnel. The power of thinking and the power of excavation are not dependent on the words in the one case...
227. oldal - From the first dawn of intelli- fl' gence we draw inferences, but years elapse before we learn the use of general language. The child, who, having burnt his fingers, avoids to thrust them again into the fire, has reasoned or inferred, though he has never thought of the general maxim, Fire burns.
70. oldal - Now, language is to the mind precisely what the arch is to the tunnel. The power of thinking and the power of excavation are not dependent on the word in the one case, on the mason-work in the other; but without these subsidiaries, neither process could be carried on beyond its rudimentary commencement.
70. oldal - A country may be overrun by an armed host, but it is only conquered by the establishment of fortresses. Words are the fortresses of thought. They enable us to realize our dominion over what we have already overrun in thought; to make every intellectual conquest the basis of operations for others still beyond.
228. oldal - What is the meaning of moon ? — the measurer. What is the meaning of sun ? — the begetter. What is the meaning of earth? — the ploughed.
165. oldal - We then recognize mountains, plains, houses, trees, animals, etc., that is, we discriminate these objects as wholes, as unities, from each other. But their parts, — the manifold of which these unities are the sum, — their parts still lose themselves in each other ; they are still but indistinctly visible. At length, when the daylight has fully sprung, we are enabled likewise to discriminate their parts ; we now see distinctly what lies around us. But still we see as yet only the wholes which...
226. oldal - John, \Thomas, &c., who once were living, but are now dead, we are entitled to conclude that all human beings are mortal, we might surely without any logical inconsequence have concluded at once from these instances, that the Duke of Wellington is mortal.
193. oldal - If it be fated that you recover from your present disease, whether you call in a doctor or not, you will recover ; again, if it be fated that you do not recover from your present disease, whether you call in a doctor...
165. oldal - Thus it is, that in the distant forest, or on the distant hill, we perceive a green surface ; but we see not the several leaves, which in the one, nor the several blades of grass, which in the other, each contributes its effect to produce that amount of impression which our consciousness requires. Thus it is, that all which we do perceive is made up of parts which we do not perceive, and consciousness is itself a complement of impressions, which lie beyond its apprehension. Clearness and distinctness...