A Manual of Logic: Deductive and InductiveM. Ogle and son, 1850 - 237 sider |
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Side 27
... occurs : - ' The two words have not the same meaning ; for though we cannot " generalise " without " abstracting , " we may perform abstraction without generalisation . If , for instance , one is thinking of " the sun , " without having ...
... occurs : - ' The two words have not the same meaning ; for though we cannot " generalise " without " abstracting , " we may perform abstraction without generalisation . If , for instance , one is thinking of " the sun , " without having ...
Side 77
... occur ; for a property must in all cases be regarded as an accident , unless it is deduced from a known differentia . The following are examples of accidental definition . " A ball is a figure that has an aptitude to roll . Heat is the ...
... occur ; for a property must in all cases be regarded as an accident , unless it is deduced from a known differentia . The following are examples of accidental definition . " A ball is a figure that has an aptitude to roll . Heat is the ...
Side 78
... occurring in Botany , Natural History and Mineralogy . In essential definition we lay down the constituting parts of the essence . It is of two kinds , viz . , logical , or metaphy- sical , and physical . In logical definition we lay ...
... occurring in Botany , Natural History and Mineralogy . In essential definition we lay down the constituting parts of the essence . It is of two kinds , viz . , logical , or metaphy- sical , and physical . In logical definition we lay ...
Side 86
... occurs wherever the predi- cate is a definition of the subject ; as , Rhetoric is the art of speaking persuasively . Or its logical difference ; as , All men are rational . A proposition is a declaratory sentence . Or a specific ...
... occurs wherever the predi- cate is a definition of the subject ; as , Rhetoric is the art of speaking persuasively . Or its logical difference ; as , All men are rational . A proposition is a declaratory sentence . Or a specific ...
Side 87
... occurs . In negative propositions , whether universal or particular , the predicate must be distributed , otherwise the proposition could not be true , e . g . , the proposition , Irrational animals are not morally responsible , would ...
... occurs . In negative propositions , whether universal or particular , the predicate must be distributed , otherwise the proposition could not be true , e . g . , the proposition , Irrational animals are not morally responsible , would ...
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abstraction accidental accidents according affirmative agree animal antecedent applied argument asserts attribute belong body called cause common term compared complex comprehension conception conclusion conditional consequent considered consists constitutes contained contradictory converse defined definition denied denotes differentia distinct distinguish distributed divided division equal essence essential example excluded existence expressed extension fallacy false figure flowers four generalisation genus Hence ideas included individuals inference judgment kinds legitimate logical major major premiss major proposition matter means middle term mind minor moods moral nature necessary negative notion objects occurs opposition original particular perfect planet points position predicate premisses principle proposition proved question rational reason reduced reference regard relation respect rules sense separate signifies simple simply convertible singular species star substance syllogism taken things third thought tion triangle true truth universal virtue vols whole
Populære avsnitt
Side 139 - Again ; the mathematical postulate, that " things which are equal to the same are equal to one another," is similar to the form of the syllogism in logic, which unites things agreeing in the middle term.
Side 46 - There are not some names which are exclusively genera, and others which are exclusively species or differentiae; but the same name is referred to one or another Predicable, according to the subject of which it is predicated on the particular occasion. Animal, for instance, is a genus with respect to Man or John ; a species with respect to substance or Being. The words genus, species, &c., are therefore relative terms ; they are...
Side 46 - It is to be remarked of these distinctions," says the author we are quoting, " that they express not what the predicate is in its own meaning, but what relation it bears to the subject of which it happens on the particular occasion to be predicated.
Side 201 - But Euathlus retorted this dilemma, thus : ' Either I shall gain the cause, or lose it : if I gain the cause, then nothing will be due to you, according to the sentence of the judge ; but if I lose the cause, nothing will be due to you...