Vienna circle

n. A group of mathematicians, philosophers, and logicians working in and around the city of Vienna in the 1920s and 1930s who believed that the only knowledge resulted from experience and that logical analysis using symbols was the best approach to understanding the world. This school of thought became known as logical positivism. The group called itself the Ernst Mach Society and included Maritz Schlick, Kurt Gödel, Marcel Natkin, Theodore Radakovic, and Rudolf Carnap.