Abstract
The aim of this paper is to investigate the relations between knowledge,
language and communication within the framework of Neurath's philosophical and political
program. In particular, we draw a parallel between the adoption of the physicalist language as
the basic language of science and the development of ISOTYPE system of visual education. We
defend the idea that they maintain a relation of reciprocity with each other that makes possible
the exchange of factual information and the transformation of verbal statements into visual
statements, and vice versa. This relation of reciprocity is also based on a series of shared
features. In this regard, we consider that both are conceived as thing-languages and both play
a pedagogical and political role, that consists in enabling communication between science and
society. For Neurath, this role also involves a model of communication aimed at the
humanization of knowledge and the democratization of decisions.