The article treats the issue of a private language as presented by Ludwig Wittgenstein in his whole work and it interprets the problem of private language as a critique of a concept of language as a calculus contrasting it with a conception of language as universal medium. According to this understanding the private language is not only a language of sense data, not even necessarily a language based purely in a subjectivity of its speaker. The article aims to show the continuity of Wittgenstein’s thought on the matter. In the end it briefly touches the question of so called solitary language as a once so popular version of the problem in the framework presented above.