The Circle of Vienna: A Brief History of Logical Positivism

The Vienna Circle, also known as logical positivism or neopositivism, emerged in the 1920s, gaining prominence in the 1930s. It was a group of thinkers, including Moritz Schlick, Rudolf Carnap, and Otto Neurath, with backgrounds in mathematics and physics, who were interested in the philosophy of science. The group was founded in 1922 when Schlick assumed the chair of inductive scientific philosophy at the University of Vienna.

The Vienna Circle members shared a common interest in science beyond their specific disciplines. They were of Jewish origin and had a broader curiosity about scientific methodology. Notable members included Moritz Schlick, Rudolf Carnap, and Otto Neurath. The group's formation in 1922 marked the beginning of a focused approach to the philosophy of science, distinct from previous scattered epistemological inquiries.

The Vienna Circle advocated for a strong, objective science that aimed to discover truth securely. They criticized relativism, metaphysics, and speculative philosophy that strayed from empirical facts. Embracing a clear ideological position, they rejected speculative philosophy, metaphysics, and religion in favor of empirical, objective truth-seeking. Their approach aligned with the positivist tradition, emphasizing empirical knowledge over speculative reasoning.

After World War I, the Vienna Circle emerged as a reaction to the setback suffered by classical positivism. The tragedy of the war led to a rejection of the positivist ideology of uninterrupted progress through science, challenging the notions of objectivity and progress that dominated the 19th century. The Vienna Circle staunchly defended objectivity and hard science against relativism and metaphysics, influenced by the context of post-World War I disillusionment with positivism.

The Vienna Circle aimed to unify science under a common language, drawing inspiration from physics and mathematics. Their epistemological and scientific objectives had political undertones, seeking a univocal language devoid of ambiguities to transmit knowledge effectively. They collaborated with like-minded thinkers to create an encyclopedia with a common scientific language, critiquing metaphysics and advocating for a scientific approach to philosophy.

The Vienna Circle embraced an exaggerated form of positivism, combining classical positivist principles with a strong emphasis on logic and language. They rejected metaphysics as nonsensical language use, transforming philosophy from speculative metaphysics to analytical philosophy. Their approach involved dissecting scientific texts to identify and eliminate metaphysical propositions, emphasizing a reduction of philosophy to analytical philosophy and promoting a communicable corpus of scientific knowledge.

The Vienna Circle defined science as only what is verifiable, separating it from what is not. According to them, only the verifiable is scientific, while the unverifiable not only lacks scientific status but also lacks meaning. They emphasized that only what is verifiable makes sense in terms of scientific methodology, particularly highlighting the importance of induction for establishing testable theories, hypotheses, and propositions.

The Vienna Circle's influence peaked in the 1930s and continued strongly into the 1940s, with members having to emigrate to the US due to the rise of Nazism. However, by the 1950s, its influence as an epistemological movement significantly declined. Criticisms of the Vienna Circle include its narrow view of science, which excluded non-verifiable aspects and social sciences. The Circle's rigid stance on science being solely verifiable led to the exclusion of nuanced and imprecise language, limiting the scope of scientific inquiry.

Although the Vienna Circle's direct influence waned, its impact persisted through positivist currents and later reconfigurations in the form of thinkers like Karl Popper. Elements of the Vienna Circle's principles can still be found in contemporary empiricist views of science and social sciences, albeit in a less rigid and dogmatic manner than initially proposed by the Circle's thinkers.