Yu Ying-shih (1930-2021) was Professor Emeritus of History at Princeton University and arguably the premiere historian of Chinese social and intellectual history of the classical period. Awarded the John W. Kluge Prize for achievement in the Study of Humanity and the inaugural Tang Prize International Award in Sinology, he published more than thirty books and five hundred articles and essays on Chinese history, thought, politics, and culture. His most recent works include Lun tian ren zhi ji (Between heaven and the human: An exploration of the origin of ancient chinese thought; 2014), Zhu Xi de lishi shijie (The historical world of Zhu Xi: A study of the political culture of Song intellectuals; 2003, 2011), Shi yu Zhongguo wenhua (Chinese intellectuals and chinese culture; 2003, 2010, and 2013), and thirty-three of his English-language essays are published in Chinese History and Culture Volume 1: Sixth Century B.C.E. to Seventeenth Century C.E. and Volume 2: Seventeenth Through Twentieth Century (Columbia University Press, 2016), with the editorial assistance of Josephine Chiu-Duke and Michael S. Duke.