The book “The great librarian: Eduard Rubenovich Sukiasyan” is published by “Pashkov Dom” Publishers’ in 2023. The reviewer describes and analyzes the contents comprising multiaspect sources. Eduard Sukiasyan, the reviewer emphasizes, is a real librarian, a classic of the library science and practice, loyal to our profession and passionate about it. The reviewed book reflects the scope and remarkability of his personality, his contribution to librarianship and library education in Russia. On the other hand, the book is the chronicle of library history, the national and international, to some extent. The book will be of interest to the professional library and information community. The most precious thing about the book is that it will be revealing for the younger librarians, as it promotes passion for work, makes them acquainted with the relevant problems of librarianship. The reviewer advises all young library professionals to read the book as it would motivate them in their career development.