The origin of the contradictions in propositions and statements

This paper is devoted to the relation problem of logic and thinking. In the context of issue concerning origin of the principle of contradiction considered the point of view according to which the nature of logical principles involves two bases: logical and psychological. A study of empirical-psychological prerequisites to the cause of ought that attributed to rule by the principle of contradiction is underway. The problem of opposite between contradicting proposition and acts of statements actualizes the question of the essential differences between thinking, language and real practice of statements. Meaningfulness criteria of statements are discussed. The conclusion is that the principle of contradiction has psychological nature.

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