Elements of Logic: Comprising the Substance of the Article in the Encyclopædia Metropolitana : with Additions, &cJ. Munroe, 1843 - 359 σελίδες |
Άλλες εκδόσεις - Προβολή όλων
Elements of Logic: Comprising the Substance of the Article in the ... Richard Whately Πλήρης προβολή - 1836 |
Elements of Logic: Comprising the Substance of the Article in the ... Richard Whately Πλήρης προβολή - 1848 |
Συχνά εμφανιζόμενοι όροι και φράσεις
abstract Adam Smith admitted affirmed ambiguity animals antecedent applied argument Arian Aristotle ascertain assertion belong Cæsar called categorical Categorical propositions categorical syllogisms Chap Christian circumstance clusion common Conclusion connexion consequently considered Copula course definition denied denote Differentia Discovery distinct divine doctrine employed Enthymeme error established evident expression fact Fallacy Fallacy of Division false genus gism hence hypothetical ignoratio elenchi implied impossible individual Induction infer instance kind labor language Logical writers Logicians major Premiss marks of design Mathematics matter meaning ment merely middle term mind minor miracles Moods nature negative never notion object observed Organon paronymous particular perhaps persons petitio principii practice predicate principles probably process of Reasoning properly proposition prove question referred regarded religion remark respecting rience rules Science Scripture sense signify sion Sorites speaking Species strictly suppose Syllogism thing tion treatise true truth universal whole word
Δημοφιλή αποσπάσματα
Σελίδα 329 - Now these things were our examples, to the intent we should not lust after evil things, as they also lusted.
Σελίδα 40 - But God has not been so sparing to men to make them barely two-legged creatures, and left it to Aristotle to make them rational.
Σελίδα 311 - The word VALUE, it is to be observed, has two different meanings, and sometimes expresses the utility of some particular object, and sometimes the power of purchasing other goods which the possession of that object conveys. The one may be called "value in use;" the other, "value in exchange.
Σελίδα 63 - by which the mind arrives at the notions expressed by ' common' (or in popular language, ' general') terms is properly called ' generalization,' though it is usually (and truly) said to be the business of abstraction ; for generalization is one of the purposes to which abstraction is applied. When we draw off and contemplate separately any part of an object presented to the mind, disregarding the rest of it, we are said to abstract that part of it.
Σελίδα 167 - projectors are unfit to be trusted ; this man has formed a project, therefore he is unfit to be trusted :"* here...
Σελίδα 42 - ... and to suppose it possible to speak correctly without speaking grammatically. — They have, in short, considered logic as an art of reasoning ; whereas (so far as it is an art) it is the art of reasoning ; the logician's object being, not to lay down principles by which one may reason, but by which all must reason, even though they are not distinctly aware of them : — to lay down rules, not which may be followed with advantage, but which cannot possibly be departed from in sound reasoning.
Σελίδα 320 - Rent is that portion of the produce of the earth, which is paid to the landlord for the use of the original and indestructible powers of the soil.
Σελίδα 235 - Nature," which is our constant assumption in inquiries relating to Natural Philosophy, assumes many different shapes, and in some of them, does not possess the same absolute certainty as in others: eg when from having always observed a certain sheep ruminating, we infer, that this individual sheep will continue to ruminate, we assume that " the property which has hitherto belonged to this sheep, will remain unchanged ; ' when we infer the same property of all sheep, we assume that " the property...
Σελίδα 337 - ... a proof that the pretensions of Logic are futile, since (it was said) the most perfect logical demonstration may lead from true premises to an absurd conclusion. The reverse is the truth ; the example before us furnishes a confirmation of the utility of an acquaintance with the syllogistic form : in which form the pretended demonstration in question cannot possibly be exhibited. An attempt to do so will evince the utter want of connexion between the premises and the conclusion ] 87. Theft is...
Σελίδα 143 - Fallacy is commonly understood, "any unsound mode of arguing, which appears to demand our conviction, and to be decisive of the question in hand, when in fairness it is not so.