LogicJ.J. Griffin, 1849 - 112 σελίδες |
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
abstract affirmed or denied ambiguity animals antecedent Apparatus applied argument argumentum Aristotle Aristotle's dictum ascer ascertain assertion belongs Cæsar called categorical categorical Propositions CATEGORICAL SYLLOGISMS Chemical circumstances Common Terms comprehended Conclusion consequent considered contained Conversion Copula cryst Definition distinct distributed Division employed Encyclopædia Engravings Enthymeme evident expression fact Fallacy Fallacy of Division false Genus gism HYDROMETERS ignoratio elenchi implied inches individual Induction infer intelligent author JOHN F. W. HERSCHEL kind language lettered Contents Logical writers Logicians major Premiss marks of design Mathematics matter meaning MECHANICAL PHILOSOPHY merely middle term mind minor Moods nature notion object observed paronymous particular PETER BARLOW petitio principii Philosophy Predicate principles process of Reasoning properly prove province of Logic pure question referred respecting rules scale Science sense signify Sophist speaking Species Spindle Syllogism syllogistic thing tion Treatises true truth universal validity Verbal word
Δημοφιλή αποσπάσματα
Σελίδα 80 - Sec., which he perhaps holds in abhorrence. Thus, when in a discussion one party vindicates, on the ground of general expediency, a particular instance of resistance to government in a case of intolerable oppression, the opponent may gravely maintain, that ' we ought not to do evil that good may come ;' a proposition which of course had never been denied, the point in dispute being, ' whether resistance in this particular case were doing evil or not.
Σελίδα 73 - he who necessarily goes or stays (ie in reality, ' who necessarily goes, or who necessarily stays ' ) is not a free agent ; you must necessarily go or stay (ie ' you must necessarily take the alternative'), therefore, you are not a free agent.
Σελίδα 50 - If this man were wise, he would not speak irreverently of Scripture in jest; and if he were good, he would not do so in earnest; but he does it, either in jest or earnest ; therefore he is either not wise or not good.
Σελίδα 59 - The very author of the objection says, " This (the comprehension of the meaning of general Terms) is a study which every individual must carry on for himself; and of which no rules of Logic (how useful soever they may be in directing our labours) can supersede the necessity.
Σελίδα 8 - In every instance in which we reason, in the strict sense of the word, ie make use of arguments, whether for the sake of refuting an adversary, or of conveying instruction, or of satisfying our own minds on any point, whatever may be the subject we are engaged on, a certain process takes place in the mind, which is one and the same in all cases, provided it be correctly conducted.
Σελίδα 12 - On further examination it will be found, that all valid arguments whatever may be easily reduced to such a form as that of the foregoing syllogisms ; and that consequently the principle on which they are constructed is the UNIVERSAL PRINCIPLE of Reasoning.
Σελίδα 52 - Sorites ; in which the Predicate of the first proposition is made the Subject of the next ; and so on, to any length, till finally the Predicate of the last of the Premises is predicated (in the Conclusion) of the Subject of the first...
Σελίδα 74 - They might argue in like manner, that because it is not very improbable one may throw sixes in any one out of a hundred throws, therefore it is no more improbable that one may throw sixes a hundred times running...
Σελίδα 40 - Figure ; (which is far the most natural and clear of all, as to this alone Aristotle's Dictum may be at once applied...
Σελίδα 37 - The third operation of the mind, viz. reasoning, (or discourse) expressed in words, is argument; and an argument stated at full length, and in its regular form, is called a syllogism: the third part of Logic therefore treats of the syllogism. Every Argument* consists of two parts ; that which is proved; and that by means of which it is proved...