Ernst Mach
The Vienna Circle appeared in public with the publication of various book series – "Schriften zur wissenschaftlichen Weltauffassung" ("Monographs on the Scientific World-Conception"), "Einheitswissenschaft" ("Unified Science") and the journal "Erkenntnis" – and the organization of international conferences in Prague; Königsberg (today known as Kaliningrad); Paris; Copenhagen; Cambridge, UK, and Cambridge, Massachusetts. Its public profile was provided by the "Ernst Mach Society" (German: "Verein Ernst Mach") through which members of the Vienna Circle sought to popularize their ideas in the context of programmes for popular education in Vienna.