Deductive Logic

by St. George Stock

1. LOGIC is divided into two branches, namely- (1) Inductive, (2) Deductive. 2. The problem of inductive logic is to determine the actual truth or falsity of propositions: the problem of deductive logic is to determine their relative truth or falsity, that is to say, given such and such propositions as true, what others will follow from them. 3. Hence in the natural order of treatment inductive logic precedes deductive, since it is induction which supplies us with the general truths, from which we reason down in our deductive inferences. 4. It is not, however, with logic as a whole that we are here concerned, but only with deductive logic, which may be defined as The Science of the Formal Laws of Thought. 5. In order fully to understand this definition we must know exactly what is meant by 'thought, ' by a 'law of thought, ' by the term 'formal, ' and by 'science.' 6. Thought, as here used, is confined to the faculty of comparison. All thought involves comparison, that is to say, a recognition of likeness or unlikeness. 7. The laws of thought are the conditions of correct thinking. The term 'law, ' however, is so ambiguous that it will be well to determine more precisely in what sense it is here used.

Genres: Nonfiction, Philosophy, Ebooks, Logic

136 pages, Paperback

First published January 1, 1888

About the author

St. George Stock was the son of St George Henry Stock senior of Castle Connell, County Sligo and Frances Wilhelmina Atkinson of Rehins Parish, Ballynahaghish, County Mayo, who were married at St Peter’s Church, Dublin on 17 December 1844. He was the fourth of six children.

In 1868 St George junior went up to the University of Oxford from Victoria College, Jersey, and was matriculated from Pembroke College on 26 October 1868.

His granddaughter Heather Grace Angel was a Hollywood actress.

Reviews

[Jenna · Rating 4 out of 5]

The problem with Inductive logic is to determined the actual truth or falsity of propositions: The problem of the deductive logic is to determine their relative truth or falsity, given such prepositions as true, what others will follow from them. All thought involved in likeness or unlikeness, and the laws of thought are the condition of the correct thinking. "St. George Stock"

Deductive or Inductive logic upon my understanding they are not of opposite matter. There's no such thing as right or wrong in both logic its how you come to the conclusion based on reality as proof.