The Substitution of Similars: The True Principle of Reasoning, Derived from a Modification of Aristotle's Dictum |
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Page 6
... on Logic , and we can scarcely wonder that the plain and scanty outline of Aldrich , or the sensible but unoriginal elements of Whately , continue to be the guides of a logical student , 6 THE SUBSTITUTION OF SIMILARS ,
... on Logic , and we can scarcely wonder that the plain and scanty outline of Aldrich , or the sensible but unoriginal elements of Whately , continue to be the guides of a logical student , 6 THE SUBSTITUTION OF SIMILARS ,
Page 7
... elements . But the subject only is quantified ; for it is stated that all metals are elements , but it is not stated what proportion of the elements may be metals . Now the quantification of the predi- cate consists in giving some ...
... elements . But the subject only is quantified ; for it is stated that all metals are elements , but it is not stated what proportion of the elements may be metals . Now the quantification of the predi- cate consists in giving some ...
Page 10
... elements , taken in connexion with the dictum de omni authorizes us to apply to all metals whatever knowledge we may have of the nature of elements , because metals are but a subordinate class included among the elements ; and ...
... elements , taken in connexion with the dictum de omni authorizes us to apply to all metals whatever knowledge we may have of the nature of elements , because metals are but a subordinate class included among the elements ; and ...
Page 11
... , All metals are some elements , where the copula are means no longer are con- tained among , but are identical with ; or availing to X こご ourselves of the sign in a meaning closely = analogous THE TRUE PRINCIPLE OF REASONING . II.
... , All metals are some elements , where the copula are means no longer are con- tained among , but are identical with ; or availing to X こご ourselves of the sign in a meaning closely = analogous THE TRUE PRINCIPLE OF REASONING . II.
Page 12
... elements . It is now evident that whatever we know of a certain indefinite part of the elements we know of all metals , and whatever we know of all metals we know of a certain indefinite part of the elements . We seem to have gained no ...
... elements . It is now evident that whatever we know of a certain indefinite part of the elements we know of all metals , and whatever we know of all metals we know of a certain indefinite part of the elements . We seem to have gained no ...
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Common terms and phrases
A B C D abacus ABCD adjective affirmative proposition analogy appear apply Aristotle Aristotle's dictum assert axiom axiom of Euclid Boole Boole's calculus Cambridge canon cloth conclusion consists copula corresponding Crown 8vo differs Diseases ELEMENTARY TREATISE equal equal-sided equivalent expression fallacy fcap follows form of inference forms of reasoning formula George Bentham hence identity indefinite indirect inequalities infallible Iron J. S. Mill law of duality laws of thought Lectures ledge logicians mathematical reasoning means ment metals are elements method mind monarch nature negative proposition obtained Owens College oxygen Philosophy pound weight premises principle of substitution Professor proposition or equation quantification quantity relation represented Royal scientific Second Edition second member self-evident self-luminous Sir William Hamilton slips subject and predicate substitution of similars syllogism symbols term element THEORY Thomson tion triangle true truth undecomposable substance University University of Cambridge
Popular passages
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