The paper discusses the philosophical vision of language of the American philosopher S. Cavell (1926). This vision is based on Wittgenstein’s idea of „forms of life“. Human speech and activity, sanity and community all rest upon nothing more and nothing less than these forms. By learning the words we initiate the beginners into the relevant forms of life held in language and gathered around the objects and persons of our world. According to Cavell the procedures of the philosophy of ordinary language lead to real self-knowledge.