The aim of this paper is (1) to briefly define the essence of integrationist semiology/linguistics (especially in Roy Harris’ works – e.g. Harris 1981, 1984, 1998a) and to present a set of basic methodological beliefs that can be considered as a principal critique of traditional (so called segregationist) linguistics / semiology. Among the most important integrationist beliefs are the non-privilege of linguistic acts in human communication (the principle of contemporality), contextualism (the sign form is not independent of the sign substance) and the inseparability of rules from their application. On this basis the paper (2) outlines the basic aspects of integrationist convictions about the relationship between the sign and the text and their comparison with Rastier’s (2015) interpretative semantics. In conclusion (3) the article discusses one current form of the philosophy of language (Pettersson, 2017) that is – to a certain extent – based on integrationism. Overall, the paper attempts to draw attention to the fact that integrationist theory in many cases provides an adequate critical reflection of traditional semiological/linguistic methodology, but in a closer look it shows that it cannot offer a robust theoretical alternative.