Full Idea
It is only because we subject the sequence of appearances and thus all alteration to the law of causality that experience itself is possible.
Gist of Idea
Experience is only possible because we subject appearances to causal laws
Source
Immanuel Kant (Critique of Pure Reason [1781], B234/A189)
Book Reference
Kant,Immanuel: 'Critique of Pure Reason', ed/tr. Guyer,P /Wood,A W [CUO 1998], p.305
A Reaction
Remarks like this make me sympathise with Hume. Kant puts it too strongly. It strikes me as theoretically possible to 'experience' a sequence with no thought of causality.