This article deals with the social introspection approach of the Czech sociologist I. A. Bláha. Its aim is not only to introduce the method but also to explore the potentials and the limits of this approach in understanding social reality. The author looks at Wittgenstein's argument against a private language as a critique of the introspective method and briefly analyses the phenomenological approach in sociology to asses the boundaries of the introspective approach. Theoretical conclusions on the application of the introspection method in sociology are drawn at the end of the article, allowing the author to assess the applicability of Blaha's method.