Zhu Xi (Chinese: 朱熹; [ʈʂú ɕí]; October 18, 1130 – April 23, 1200), formerly romanized Chu Hsi, was a Chinese philosopher, historian, politician, poet, and calligrapher of the Southern Song dynasty. As a leading figure in the development of Neo-Confucianism, Zhu Xi played a pivotal role in shaping the intellectual foundations of later imperial China. He sought to integrate moral self-cultivation, classical interpretation, ritual practice, and cosmological theory into a coherent framework, emphasizing disciplined study and ethical cultivation while criticizing approaches—particularly within contemporary Buddhist traditions—that claimed immediate insight detached from ritual, learning, and moral practice. His extensive commentaries and editorial work on the Four Books became the core texts of the imperial civil service examinations from 1313 until their abolition in 1905. He advanced a rigorous philosophical methodology known as the "investigation of things" (格物) and emphasized meditation as an essential practice for moral and intellectual self-cultivation.
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