1181128 China: The Daoist Zhuangzi \'Dreaming of a Butterfly\'. Lu Chin, ink on silk, mid-16th century (detail); Palace Museum, Beijing, China; (add.info.: Zhuangzi was an influential Chinese philosopher who lived around the 4th century BCE during the Warring States Period, a period corresponding to the philosophical summit of Chinese thought - the Hundred Schools of Thought.); Pictures from History; out of copyright.