 | Alexander Bain - 1868 - 902 oldal
...accompaniment of the use of speech. To deny it, is intellectual suicide. Another so-called necessary truth is the Law of Contradiction. A thing cannot both be and not be. This is merely the law of Identity in another form. For example, if it be affirmed, ' This room is... | |
 | William Stanley Jevons - 1870 - 420 oldal
...self-contradiction unless we observe what are called the Three Primary Laws of Thought, which may be stated as follows : 1. The Law of Identity. Whatever is, is. 2. The Law of Contradiction. Nothing can both be and not be. 3. The Law of Excluded Middle. Everything must either be or not be.... | |
 | Alfred Swinbourne - 1875 - 224 oldal
...is mortal he is, and I need not fear to leave that premiss while I busy myself with the other. II. The law of contradiction. 'A thing cannot both be and not be.' A man can't be both tall and not tall at the same time. Of course, ' not tall ' means everything that... | |
 | Alexander Bain - 1882 - 576 oldal
...accompaniment of the use of speech. To deny it, is intellectual suicide. Another so-called necessary trnth is the Law of Contradiction. A thing cannot both be and not be. This is merely the law of Identity in another form. For example, if it be affirmed, ' This room is... | |
 | Albert Edward Winship - 1885 - 242 oldal
...be at our command as the multiplication table is. These principles are stated in logic as laws: — 1. The Law of Identity. Whatever is, is. 2. The Law of Contradiction. Nothing can both be and not be at the same time. 3. The Law of Excluded Middle. Everything must either... | |
 | Alfred James Swinburne - 1887 - 224 oldal
...only need know their names for the present. They are — I. The Law of Identity (whatever is, is). II. The Law of Contradiction (a thing cannot both be and not be). III. The Law of Excluded Middle (a thing must either be or not be). Simple and even absurd they appear... | |
 | Sir Thomas Dyke Acland - 1896 - 274 oldal
...to all notions of which we can conceive." He calls them " the Primary Laws of Thought," which may be stated as follows " : 1. The Law of Identity. WHATEVER is, is. 2. The Law of Contradiction. NOTHING CAN BOTH BE AND NOT BE. 3. The Law of Excluded Middle. EVERYTHING MUST EITHER BE OR NOT BE.... | |
 | William De Witt Hyde - 1897 - 364 oldal
...so-called laws of thought and the principles of the syllogism. The three primary laws of thought are : 1. The Law of Identity. Whatever is, is. 2. The Law of Contradiction. Nothing can both be and not be. 3. The Law of Excluded Middle. Everything must either be or not be.... | |
 | Edward L. Hawkins - 1898 - 92 oldal
...reasoning is based, are certain uniformities which must underlie all correct reasoning. They are : — (1) The Law of Identity. Whatever is, is. (2) The Law of Contradiction. Nothing can both be and not be. (3) The Law of Excluded Middle. Everything must either be or not be.)... | |
 | James MacKaye - 1906 - 578 oldal
...Deduction: Deduction is a mental process depending upon the so-called LAWS OF THOUGHT, expressible as follows : (1) The Law of Identity: Whatever is, is. (2) The Law of Contradiction: Nothing can both be and not be. (3) The Law of Excluded Middle: Everything must either 'be or not be.... | |
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Whatever is, is." (2) The law of contradiction: "Nothing can both be and not be." (3) The law of excluded middle: "Everything must either be or not be. 
