  Mally was trained not only in philosophy but also in mathematics, and was influenced by Ernst Schröder, and later, of course, by Whitehead and Russell. He therefore learned how to apply modern logical methods to philosophical theories, and in particular to the theory of objects (Gegenstandstheorie) developed by his teacher Alexius Meinong as well as to the theory of norms in his development of deontic logic. Among the Austrian philosophers, Mally was one of the pioneers of formal methods in discussing philosophical problems. Note that Mally’s disciple Hans Mokre was the first to translate the introductory chapters to Whitehead and Russell’s Principia Mathematica into German, with Mally’s assistance (Russell/Whitehead 1932). Mally had originally planned to translate the complete Principia himself.