Eastern philosophy
The "Dao De Jing" ("Tao-Te-Ching," c. 4th century BCE), traditionally attributed to Laozi, and the "Nan Hua Jing" ("Zhuang Zi") are considered the key texts of the tradition. The first organized form of Taoism, the Tianshi (Celestial Masters') school arose in the 2nd century CE. Xuanxue ("deep learning", also "Neo-Taoism") was a major philosophical movement influenced by Confucian scholarship, which focused on the interpretation of the "Yijing," "Daodejing," and "Zhuangzi" and which flourished during the third to sixth centuries CE. The most important philosophers of this movement were He Yan, Wang Bi, the Seven Sages of the Bamboo Grove, Ge Hong and Guo Xiang. Thinkers like He Yan and Wang Bi focused on the deep nature of Tao, which they saw as being best exemplified by the term "Wu" (nothingness, non-being, negativity).
Buddhist philosophy
Western Buddhist monastics and priests such as Nanavira Thera, Bhikkhu Bodhi, Nyanaponika Thera, Robert Aitken, Taigen Dan Leighton, Matthieu Ricard have written texts on Buddhist philosophy. A feature of Buddhist thought in the West has been a desire for dialogue and integration with modern science and psychology, and various modern Buddhists such as Alan Wallace, James H. Austin, Mark Epstein and the 14th Dalai Lama have worked and written on this issue. Another area of convergence has been Buddhism and environmentalism, which is explored in the work of Joanna Macy. Another Western Buddhist philosophical trend has been the project to secularize Buddhism, as seen in the works of Stephen Batchelor.