Bernard Bolzano, Wissenschaftslehre 392-481

English summary: This critical edition of Bolzano's main philosophical work incorporates his own corrections, among other things. It originated as Bolzano's attempt to refute skepticism. In order to do so, he had to analyze the concept of the truth in itself to begin with, and this analysis led him to the concept of the proposition in itself. In this context he developed his theory of the reduction of sentences to a basic form which all have in common. All of these analyses and identifications of terms culminate in a theory of logical truth and of logical consequence. This is an outstanding achievement in the history of occidental thought. 201001411 - BOLZANO: GES.AUSG.I/14,1 This critical edition of Bolzano's main philosophical work incorporates his own corrections, among other things. It originated as Bolzano's attempt to refute skepticism. In order to do so, he had to analyze the concept of the truth in itself to begin with, and this analysis led him to the concept of the proposition in itself. In this context he developed his theory of the reduction of sentences to a basic form which all have in common. All of these analyses and identifications of terms culminate in a theory of logical truth and of logical consequence. This is an outstanding achievement in the history of occidental thought. German description: Diese kritische Edition des philosophischen Hauptwerks Bolzanos berucksichtigt u.a. seine eigenen Verbesserungen. Den Ausgangspunkt des Werkes bildet Bolzanos Versuch, den Skeptizismus zu widerlegen. Daher musste er zunachst den Begriff der Wahrheit an sich analysieren; diese Analyse fuhrte ihn zum Begriff des Satzes an sich. Im Zusammenhang damit entwickelte er seine Theorie der Reduktion sprachlicher Satze auf eine allen gemeinsame Grundform. Alle diese Begriffsanalysen und Begriffsbestimmungen gipfeln in einer Theorie der logischen Wahrheit und der logischen Folge. Sie ist eine herausragende Leistung in der Geschichte des abendlandischen Denkens.