The Bibliographic Treatise and the Classification of Knowledge

The Bibliographic Treatise and the Classification of Knowledge

The Treatise on Literature (Yi Wen Zhi) in the Book of Han is the earliest surviving bibliography in Chinese history and one of the earliest in the world. It catalogues the imperial library of the Western Han dynasty, listing over 600 works in categories that reveal how Han scholars organized the entire field of human knowledge. The Ban Gu and the First Dynastic History compilation, drawing on earlier cataloging work by Liu Xiang and Liu Xin, created a classification system that shaped Chinese library science for two millennia.

The Origin of the Treatise

In 26 BCE, Emperor Cheng ordered the scholar Liu Xiang to organize the imperial library. The library had grown through centuries of accumulation, including the haul of texts recovered after the Qin dynasty’s burning of books. Liu Xiang spent twenty years sorting, cataloging, and writing abstracts of the collection. He died in 8 BCE, and his son Liu Xin completed the work in about 5 BCE. Liu Xin’s classification, called the Seven Epitomes (Qi Lue), became the basis for Ban Gu’s Treatise on Literature.

Ban Gu adapted the Seven Epitomes into a six-category system and embedded it in the Book of Han as one of the Hanshu Treatises on Government. The result is a catalogue that not only lists books but also provides a map of Han intellectual life: what was considered worth preserving, how fields of knowledge were defined, and how they related to each other.

The Six Categories of Knowledge

The Six Arts: The Foundation

The first and most important category was the Six Arts, the Confucian classics. The Hanshu and the Western Han Empire had made mastery of these texts the gateway to government office, and the treatise gives them pride of place. The Six Arts included the Book of Changes (Yijing), the Book of Documents (Shangshu), the Book of Odes (Shijing), the Rites (Liji), the Music (Yuejing, lost but referenced), and the Spring and Autumn Annals (Chunqiu). Each was further divided into versions associated with different schools of interpretation.

The primacy of the Six Arts reflects the Confucian bias of the treatise. Confucian texts were treated as the foundation of all knowledge. Everything else was categorized relative to them. This ordering influenced how Chinese scholars thought about the hierarchy of disciplines for centuries.

The Philosophers: A Map of Thought

The second category, Philosophers, catalogued all schools of thought outside the Confucian mainstream. The treatise identified ten schools: Confucian, Daoist, Legalist, Mohist, School of Names (logicians), School of Yin-Yang, Diplomatists, Miscellaneous, Agricultural, and Minor Schools. For each school, it listed the surviving works, named the founding figures, and provided a brief assessment of the school’s strengths and weaknesses.

This section is our primary source for understanding the diversity of pre-Han philosophical thought. Many of the works it lists were later lost. The treatise preserves the memory of books we can never read, giving us a sense of the intellectual richness that was lost when Confucianism became the state orthodoxy. The Book of Han vs Shiji comparison shows that Sima Qian celebrated this intellectual diversity; Ban Gu catalogued it as a closed historical chapter.

The Other Categories

The Poetry section listed works from the early Zhou period through the Han, including the fu rhapsodies that were a signature Han literary form. The Military Strategy section listed texts on warfare, reinforcing the treatment of military knowledge as a distinct field. The Divination and Numbers section covered astrology, numerology, and divination, connecting this classification system to the broader world of overview of Chinese metaphysics. The Techniques and Methods section covered medicine and health practices, a category that showed the treatise’s attempt to be comprehensive.

The treatment of divination, medicine, and cosmology in the same catalogue as Confucian classics and philosophy reveals a Han worldview that did not separate science from philosophy from religion the way modern categories do. Astrology, medicine, ethics, and governance were all part of one interconnected field of knowledge. The Wu Xing Five Elements theory, for example, appears in multiple categories: as philosophy in the Philosophers section, as divination in the Numbers section, and as cosmological theory in the Six Arts interpretation of the Book of Changes.

The Books That Were Lost

One of the most poignant features of the Treatise on Literature is its record of books that no longer exist. The treatise lists works that were already centuries old when the Han library was assembled. Many of these works were subsequently lost during the upheavals that followed. The fall of the Western Han, the wars of the Three Kingdoms period, and later dynastic transitions destroyed libraries and scattered collections. We know these books existed only because the Treatise on Literature recorded their titles and authors.

Among the losses are important philosophical works of the Mohist school, military texts of the Warring States period, and medical treatises that may have contained practical knowledge preserved nowhere else. The treatise stands as a monument to what was saved and a tombstone for what was lost.

FAQ

What is the relationship between Liu Xin’s catalog and Ban Gu’s treatise?

Liu Xin’s Seven Epitomes was the original catalog. Ban Gu adapted it into the Treatise on Literature in the {LINK_PILLAR}, changing the seven-category structure to six and adding his own evaluative comments. The Liu Xin original is lost, and Ban Gu’s treatise is our only surviving version of the classification.

How many books are listed?

The treatise lists roughly 670 works and over 12,000 individual chapters. Some works were substantial multi-volume compositions. The total represents the content of the imperial library at the end of the Western Han, one of the great collections of the ancient world.

Did the treatise include fiction?

Han period fiction, including the zhiguai tales and early narratives, was generally categorized under Philosophy or Miscellaneous. The treatise did not have a separate fiction category. Literature and philosophy were not sharply distinguished in the Han system.

Is there an English translation of the treatise?

Not a complete one. Various scholars have translated sections. The introduction and the Philosophers section have received scholarly attention. The complete treatise remains accessible primarily in Chinese, with the {LINK_TREATISES} article on our site providing an overview of all ten treatises.