Zen/Chan 禪 occupies a unique position in world intellectual history. This article argues that there is a trend in the development of Chan thought which significantly reduces the innovative nature of Huineng’s 慧能 original thought and evinces an institutional effort to realign Huineng’s school of Chan with the Buddhist establishment. Its main objective is to locate the original sources of Huineng’s Chan and restore the revolutionary ideas of his thought. Adopting an approach that integrates historical materials with psychology, neuroscience with (...) philosophy, and close reading of Huineng’s interpretation of the Diamond Sutra and his innovative ideas and methods of cultivation in the Platform Sutra in relation to Laozi’s 老子 and Zhuangzi’s 莊子 Daoist ideas, it works out insights into the originality and universal appeal of Chan and the hitherto unpenetrated secret of Chan enlightenment. It concludes that the core of Huineng’s Chan thought is his idea of wunian 無念 (no-thinking), and satori 悟り is not the Buddhist enlightenment. (shrink)