The article is devoted to the defining of the phenomena of Ukrainian cultural movement of the 19th century, when under conditions of comprehensive Russification of the Ukrainian community and the influence of the Church Slavonic language as well as of complete lack of education in the native language, the processes of creation of the Ukrainian literary language took place. The new Ukrainian spelling was established, the struggle for teaching in schools in the Ukrainian language was intensified, various styles, and lot of genres of literature in the native language were developed. These searches and comprehension by advanced representatives of political, cultural and social life are considered. It is determined that the spirit of romanticism, European revolutions, the abolition of serfdom, scientific and industrial shifts gave birth to a galaxy of unique Ukrainian thinkers, scientific societies, writers, etc. Among them, Panteleimon Oleksandrovich Kulish (1819-1997) was a significant person due to his energy, ability to organize a business, multifaceted talent, profound knowledge. One of the resonance works of the diverse creative heritage P.O. Kulisha is studied in the article, that is a book for initial education in native language − the "Grammar" of the Ukrainian language, which was highly appreciated by T. Shevchenko. Its structure, the content of each part, the pedagogical role as well as the concept of the author, manifested in its preface and the final part were described. The study emphasizes that in the processes of creating a new literary Ukrainian language, its spelling, writing textbooks, grammars in Ukrainian for initials education, two periods are noticeable: the first one – the 20-30th years of the 19th century, when the problems of the necessity of a new literary language arose, the new literature, preservation of the ethnographic, folklore heritage of the people, the second one – the 40-60th-years was the period of active participation of a new generation of Ukrainian thinkers in the development of the Ukrainian literary language, the creation of new spelling, new literature for primary education in native Ukrainian language. The role of "Grammar" in the formation of a new Ukrainian literary language and its phonetic spelling, in the formation of education in the Ukrainian language, the creation of textbooks in the Ukrainian literary language, and the development of Ukrainian writing are underlined. The emphasis was also put on the introduction of the author's, phonetic spelling, the so-called "Kulishivka" in the "Grammar", which is the basis of the modern Ukrainian spelling. Despite the prohibition of "Valuevsky (1863)" and "Yamsky (1876)" decrees, books and newspapers, although very limited were published in Ukrainian. The article also highlights the following discourses: the role of "Grammar" wrote by P. Kulish (the theory and practice of creating a Ukrainian literary language, the new Ukrainian spelling, which caused the intensification of imperial repressions) and its contemporary significance for the new Ukrainian space of ideas, meanings, communication, methods of publications in the Ukrainian language, as well as some grammatical factors of the theory or history of writing: the language of sound - the language of the book: thinking - writing, writing - thinking; sound - letter, letter - sound; "science of reading" - writing, etc. Comparison of discourses contributes to the conclusion that the development of the living language, sound of language during writing has been improved so complex and multifaceted in the 19th century that passed later in the 20th century, and even in the 21st century remain controversial, as evidenced by the lengthy discussion of the “Project of the New Ukrainian spelling”.