The Murder of Professor Schlick

It is not to be a happy experience for many of them-uprooted from Viennese culture, separated from old friends and intellectual soul-mates. The governing principle for which the Circle is best known, logical positivism, famously maintained that only two types of propositions were meaningful: those that could be verified through experience (e.g. water boils at 100 degrees centigrade) and those that were analytically true - true by virtue of the terms they employed (e.g. all bachelors are unmarried men). All other propositions were, literally, meaningless. These included propositions about God and certain propositions about aesthetics and morality (such as 'murder is wrong'). A list of names linked to the Circle reads like a Who's Who of 20th century philosophy, mathematics and science. In addition to Schlick, it includes Rudolf Carnap, Otto Neurath, Phillip Frank, Hans Hahn, Olga Hahn-Neurath, Karl Menger, Friedrich Waismann, Herbert Feigl, Kurt Gödel, Carl Hempel, W.V.O. .