Sprache und Denken; Erkenntnis und Sprache; Language and thought; Erkenntnistheorie; Epistemology and language; Language and epistemology ; Erkenntnistheorie und Semiotik; Epistemology and semiotics; Semiotics and epistemology ; Semiotik (Theorie) ; Semiotic theory; Theory (semiot.) ; Plérémique; Sign (linguistic) ; Linguistic sign ; Taxonomic linguistics; Structuralism