A Prerequisite for Rational Philosophical Discussion.- Epistemology and Logic.- Zur Rolle der Sprache in Erkenntnistheoretischer Hinsicht.- Some Remarks Concerning Languages, Calculuses, and Logic.- Carnap and Logical Truth.- Extension and Intension.- The Present Situation in the Philosophy of Mathematics.- A Counterpart of Occam's Razor in Pure and Applied Mathematics Ontological Uses.- Towards a General Theory of Computability.- Inductive Inconsistencies.- Einige Beiträge zum Problem der Teleologie und der Analyse Von Systemen Mit Zielgerichteter Organisation.- Beleuchtung Von Anwendungen der Logistik in Werken Von Rudolf Carnap.- Typology of Questionnaires Adopted to the Study of Expressions with closely Related Meanings.- Permissible and Impermissible Locutions.- Non-cognitive Synonymy and the Definability of 'Good'.- On the History of the International Encyclopedia of Unified Science.