From 《
庄子·
秋水》 (Zhuangzi, Qiushui chapter, ~4th c. BCE), the famous
濠梁之辩 (Hao River bridge debate) between Zhuangzi and Huizi:
庄子 strolled on the bridge over the Hao with
惠子, saying the minnows swam at leisure - this is the joy of fish. Huizi replied, you are not a fish, how do you know the joy of fish? Zhuangzi answered, you are not me, how do you know I don't know the joy of fish? The canonical Chinese thought experiment on epistemic access.