 Neurath was a social scientist, scientific philosopher and maverick leader of the Vienna Circle who championed ‘the scientific attitude’ and the Unity of Science movement. He denied any value to philosophy over and above the pursuit of work on science, within science and for science. And science was not logically fixed, securely founded on experience nor was it the purveyor of any System of knowledge. Uncertainty, decision and cooperation were intrinsic to it. From this naturalistic, holistic and pragmatist viewpoint, philosophy investigates the conditions of the possibility of science as apparent in science itself, namely, in terms of physical, biological, social, psychological, linguistic, logical, mathematical, etc. conditions. His views on the language, method and unity of science were led throughout by his interest in the social life of individuals and their well-being. To theorize about society is inseparable from theorizing for and within society. Science is in every sense a social and historical enterprise. It is as much about social objectives as it is about physical objects, and about social realizations as much as about empirical reality. Objectivity and rationality, epistemic values to constrain scientific thought, were radically social. The topics of political economy and visual education, based on the ISOTYPE language, are concrete legacies that have regained relevance, urgency and interest. These are discussed in the supplements,  Political Economy  and  Visual Education.