Logical Necessity and Physical Causation I'm finally - after much fear and trepidation, am reading Kant's Critique, and it certainly helps to have read a decent amount of commentary on it, makes it much smoother.
I'm currently into his Of the Deduction of the Pure Concepts of the Understanding Third Section. I'm aware there is likely more about Hume here, aside from his comments on the Prolegomena.
It seems to me that the move Kant makes is correct, in essence. Nevertheless, causality is a bit harder that merely arguing that it must be an a-priori aspect of our cognition. It undoubtably is, but there is no guarantee that these apply in "ordinary experience", as a necessity, there are exceptions and illusions.
But, even granting that most of the time, we are roughly correct in our causal inferences in everyday life, the problem of causality in the objects outside ourselves remains entirely untouched.
And the concept is rather obscure, in as much as we can only perceive that it is a constant conjunction, though there has to be more than this to causality.
Of course, Kant would say, plausibly, that of these things in themselves we know nothing. Maybe we don't. But Hume's statement of the problem remains rather fierce, as I see it.