Beside its historical value, "Đại Việt sử ký toàn thư" is also considered an important work of the literature of Vietnam because Ngô Sĩ Liên often provided more information about the mentioned historical figures by the additional stories which were well written like a literary work. From various comments of Ngô Sĩ Liên, it seems that the historian also tried to define and teach moral principles based on the concept of Confucianism. For example, Ngô Sĩ Liên mentioned for several times the definition of a "Gentleman" ("Quân tử") who, according to the historian, had to possess both good qualities and righteous manners, Ngô Sĩ Liên also emphasized the importance of the "Gentleman" in the dynastic era by pointing out the difference between a "Gentleman" and a "Mean man" ("Tiểu nhân") or determining what would be the effectiveness of the example of such "Gentlemen".