This book is a collection personally selected by Tang Yijie, featuring twenty-four representative essays published from 1982 to 1998. These essays reflect the main philosophical and cultural issues he explored during the 1980s and 1990s, summarizing a critical phase of Tang Yijie's academic research. The entire work focuses on the concepts and propositions of Chinese philosophy, discussing Confucian philosophical theories on cosmology and life, value rationality, and moral education; examining Daoism, Daoist philosophy, and Chinese Buddhism; and providing commentary on the cultural trends in China during the 1980s and 1990s.