abstract:Ài Sīqí (艾思奇) is the penname of Li Shengxuan (李生萱, 1910–1966), a Yunnan Mongol Chinese philosopher and author. He was born in Yunnan, later traveling to Hong Kong, where he studied English and French at a Protestant school and was exposed to Sun Yat-sen’s Three Principles of the People and Marxism.