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accent Accordingly admit affirmative alteration animal applied argument Aristotelian Aristotle assertion called CD'C chapter chimæra clusion colour common complex syllogism conclusion connexion consequence considered contained contradiction contranominal contrary convertible copula definite denial denote deny disjunctive distinction existence expressed extension quantity external fallacy false figure genus gism give idea identical ignoratio elenchi inconvertibles induction inference knowledge language less letters logic logicians matter meaning middle term mind mode necessary notion number of Xs object particular syllogism petitio principii preceding predicate probability prove quantification quantity question reader reason reference relation rule second premise simple proposition simple syllogism Sir William Hamilton sophism speak species subcontrary subidentical subject and predicate supercontrary superidentical suppose symbol testimony thing third tion true truth universal universal proposition valid weakened white ball word write Xs are Ys Ys are Xs
278 ページ - ... fcenes, he feems to produce without labour, what no labour can improve* In tragedy he is always ftruggling after fome occafion to be...
172 ページ - By degree of probability we really mean, or ought to mean, degree of belief. It is true that we may, if we like, divide probability into ideal and objective, and that we must do so, in order to represent common language.
173 ページ - An omniscient being would never employ probable inferences, since every proposition would be known to be certainly true or certainly false. Beings lacking omniscience must rely on probabilities, since their knowledge is incomplete, and probability measures their ignorance. When we feel altogether...
76 ページ - A is greater than B, B is greater than C, therefore A is greater than C.
27 ページ - I would not dissuade a student from metaphysical inquiry ; on the contrary I would rather promote the desire of entering on such subjects ; but I would warn him, when he tries to look down his own throat with a candle in his hand, to take care that he does not set his own head on fire...
123 ページ - B, or if C is D, E is F ; But either A is B, or C is D ; /. E is F.
237 ページ - there is no such thing as a classification of the ways in which men may arrive at an error: it is much to be doubted whether there ever can be."* Surely, there can be no conclusive and comprehensive classification.
328 ページ - A it affirms of this, tJvese, all — Whilst E denies of any : I, it affirms, whilst 0 denies, Of some (or few or many). Thus A affirms, as E denies, And definitely either : Thus I affirms, as O denies, And definitely neither. A half, left semi-definite, Is worthy of its score ; U, then, affirms, as Y denies, This, neither less nor more.
36 ページ - ... Whately, understands by a Real Definition one which contains less than the Nominal Definition, provided only that what it contains is sufficient for distinction. "By real definition I mean such an explanation of the word, be it the whole of the meaning or only part, as will be sufficient to separate the things contained under that word from all others. Thus the following, I believe, is a complete definition of an elephant: An animal which naturally drinks by drawing the water into its nose, and...