Wang Chong
Joseph Needham (1900–1995), a late Professor from the University of Cambridge and author of the groundbreaking "Science and Civilisation in China" series, stated that the "Han time (especially the Later Han) was one of the relatively important periods as regards the history of science in China." He noted the advancements during Han of astronomy and calendrical sciences, the "beginnings of systematic botany and zoology", as well as the philosophical skepticism and rationalist thought embodied in Han works such as the "Lunheng" by the philosopher Wang Chong (27–100 CE).