The Four Books constitute in truth a single classic. The renowned scholar Zhu Xi selected these four works: the Daxue 大學 (“Great Learning”), the Lunyu 論語 (“Discourses” or “Analects”), the Mengzi 孟子 (“Book of Mengzi”) and the Zhongyong 中庸 (“Doctrine of the Mean”). He established a logical sequence of study, and spent forty years on his Collected Commentaries to elucidate their meaning and unify their scattered principles into a coherent model of thought. In 1190 he published this as Sishu zhangju jizhu 四書章句集注 (“Four Books with Collected Commentaries”),¹ which is the work presented.²

Here the student reads from a great concert of ancient and medieval Confucian thinkers. Their subtle words and broad principles, scattered across fifteen hundred years, are now gathered in a single text. This is referred to as “the Great Synthesis” (ji dacheng 集大成). In time the Four Books supplanted the Five Classics, becoming the foundation of the educational system. The scholar Wing-tsit Chan said, “As a result, they have exercised far greater influence on Chinese life and thought in the last six hundred years than any other Classic,”³ an influence that extended to Korea, Japan, Vietnam, and the Southern Seas. Thus it is most fitting that the English-speaking world should possess a translation of this essential classic.⁴

Of course there have been many translations of the individual four books themselves, but that is not how these texts have been traditionally studied in East Asia. For the commentaries together with the ancient texts form a complete curriculum, one which became the foundation of learning, from village schools to the civil service examinations, and which fixed the orthodox interpretation of these texts. The work of Zhu Xi is the unifying force that renders these passages into a coherent model of thought. What follows is this Great Synthesis, which serves as the traditional introduction to Confucian thought.

— Daoxue Academy 道學學堂

四書者，實一經也。 大儒朱熹擇此四書：大學、論語、孟子、中庸。 定其學習次第，四十年著集注，明其義理，會通散義，成一貫之思想體系。 淳熙十七年刊行四書章句集注，即今所呈之書。 學者於此得讀古今儒賢薈萃之文，其微言大義，散於千五百年間者，今聚於一編。 此所謂「集大成」也。 其後四書代五經而為教學之本。 學者陳榮捷言：「故近六百年來，其於中國人生思想之影響，遠過諸經。」此影響及於朝鮮、日本、越南、南洋。 故英語世界得此要典譯行，實所宜也。 四書各篇之西譯固多有之，然東亞傳統讀書之法不如是也。 蓋註疏與古文共成完備之課程，為學習之根本，自鄉塾至科舉，而定此諸篇正統之解釋。 朱子之功，在會通諸文，使成一貫思想體系。 以下即此集大成，為儒學入門之傳統要道。