Graham’s Zhuangzi then addressed this Mencian response in a passage that extends the Hume-like skepticism about any identifiable “inner self”. That should be what guides the naturally occurring emotive reactions that are necessary for a wǒI:me that chooses. It seems, he says, there must be one, but we find no evidence of it. We approve of behaviors and place our trust in its reactions but find no sign of what is authorizing or making them. 