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Gibson and Klein on Truth and Logic

The Problem of Logic (A. and C. Black: 1908), p. 1.

Logic is the mind’s systematic attempt to understand the nature and the conditions of the search after Truth. To the question, ‘What is Truth?’ we would answer by suggesting the following provisional definition: Truth is the Unity of ideas as systematically organized through the control exercised by relevant fact. Or: Truth is the Unity of Thought as systematically organized through the control exercised by that aspect of Reality which is relevant to the purpose of the thinker. With a view to bringing out the meaning of these definitions, we must state in the first place that we do not regard Truth as a datum, but as a problem. The truth we seek cannot be that from which we start, for were truth already attained at the outset, no sufficient reason could be assigned for proceeding any further with the quest. We might, of course, regard the Truth as given, and devote our energies to its systematic exposition and application. But, in that case, we should have radically to alter our definition of Logic. Logic would no longer deal with the Search after Truth, but would be busied solely with the question of its consistent presentation. Logic would just mean Consistency-Logic, and might be defined as the mind’s systematic attempt to understand the nature and the conditions of a correct presentation of the Truth. But, valuable as such a Consistency-Logic would be, its logical value would be, not in its relation to a system
of given truth, but in its analysis and development of the laws of consistent thinking.