Lu Jiuyuan
Lu Jiuyuan (Chinese: 陸九淵; pinyin: Lù Jiǔyuān; 1139–1192), or Lu Xiangshan (陸象山; Lù Xiàngshān), was a Chinese philosopher and writer who founded the school of the universal mind, the second most influential Neo-Confucian school. He was a contemporary and the main rival of Zhu Xi.