Of all the pioneers of Red Vienna, Otto Neurath was undoubtedly the most active and original. When the aged Bruno Kreisky talks about his encounters with Otto Neurath (1882–1945) in the 1930s, there is a feeling of great reverence for the polymath and important member of the Vienna Circle’s philosophical circle, who was the exact opposite of an unworldly bookworm. Neurath, an incorrigible optimist, wanted to change the world for the better. And came up with a lot of innovative things.