Based on a thorough analysis of the given Stanislav's work that in theme deviates from his publications oriented mostly historically, the paper confirms that the method of research predominantly reflects the author's way of thinking and that the theme of research has only a marginal influence on it. However, the linguistic works of J. Stanislav show natural tendencies of a gradual (though unfinished) transition from one methodology to another one naturally following in development. Like structuralism was a natural result of positivistically accumulated human knowledge, also in Stanislav's work the amount of accumulated knowledge from historical and general linguistics and his good command of several live languages and dialects supported by scientific intuition naturally transformed into functional conclusions in synchronic phonetics and phonology (identical with conclusions of linguistic structuralism).
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