Textbook of Logic |
Common terms and phrases
æther affirmed affirming the antecedent analysis antecedent arguments Aristotle asserted assumptions asymmetrical relations axioms becomes called categorical proposition categorical syllogism class proposition conclusions concrete connection contrapositive deal deductive definition determine difficulty discovered disjunctive disjunctive syllogism division elements Euathlus experience experimental expressed facts fallacy false father figure formal logic fundamental geometry gism Give examples given hypothesis hypothetical hypothetical syllogism illicit major immediate inference induction instruments involves judgment kind knowledge major premise material mathematics means ment method Mill's methods modus tollens moods motion namely nature not-y object observation obversion operations organization physical possible predicate principle problem propositional function purpose question rational reasoning relational propositions rules scientific scientist sense standpoint statement subject matter syllogistic symbolized systematic inference terms and relations theory things thinking thought tion transformation transitive relations triangle true universal valid various
Popular passages
Page 415 - We accuse him of having given up his people to the merciless inflictions of the most hot-headed and hard-hearted of prelates ; and the defence is, that he took his little son on his knee and kissed him...
Page 295 - It is hardly necessary to add, that any thing which any insulated body, or system of bodies, can continue to furnish without limitation, cannot possibly be a material substance...
Page 160 - Barbara, Celarent, Darii, Ferioque, prioris; Cesare, Camestres, Festino, Baroko, secundae; Tertia, Darapti, Disamis, Datisi, Felapton, Bokardo, Ferison, habet ; Quarta insuper addit Bramantip, Camenes, Dimaris, Fesapo, Fresison.
Page 259 - Vice is a monster of so frightful mien, As, to be hated, needs but to be seen; Yet seen too oft, familiar with her face, We first endure, then pity, then embrace.
Page 279 - If tWO or more instances in which the phenomenon occurs have only one circumstance in common, while two or more instances in which it does not occur have nothing in common save the absence of that circumstance, the circumstances in which alone the two sets of instances differ is the effect, or the cause, or an indispensable part of the cause, of the phenomenon.
Page 394 - No reason can be given why the general happiness is desirable, except that each person, so far as he believes it to be attainable, desires his own happiness. This, however, being a fact, we have not only all the proof which the case admits of, but all which it is possible to require, that happiness is a good : that each person's happiness is a good to that person, and the general happiness...
Page 273 - If two or more instances of the phenomenon under investigation have only one circumstance in common, the circumstance in which alone all the instances agree is the cause (or effect) of the given phenomenon.
Page 310 - The more bountifully the Parent is gifted by nature, the more rare will be his good fortune if he begets a son who is as richly endowed as himself, and still more so if he has a son who is endowed yet more largely.
Page 293 - ... into contact with the liquid, where they find appropriate food and develop; thence microscopic beings. In the second flask, on the contrary, it is impossible, or at least extremely difficult, unless air is violently shaken, that dusts suspended in air should enter the vase ; they fall on its curved neck.
Page 412 - They tell us, sir, that we are weak; unable to cope with so formidable an adversary. But when shall we be stronger? Will it be the next week or the next year? Will it be when we are totally disarmed, and when a British guard shall be stationed in every house? Shall we gather strength by irresolution and inaction?