is a priori and unanalysable.

He ends this chapter by discussing Hume's denial of the claim that the concept of causation possesses any objective validity. Hume argues that we can never see one event cause another, only the constant conjunction of events. It is subjective necessity (habit), according to Hume, that makes us view events that occur repeatedly alongside or after one another as being causally connected. Kant suggests that if Hume's view were universally accepted, then Kant could not have