I find it fascinating how similar it is to the Critique of Pure Reason, though the backgrounds of the two authors are so different.

Kant and Hume embody the religious and scientific schools in philosophy, Kant seeing belief as a transformative force and Hume seeing it as a peculiarly of the human character.

The ultimate conclusion that you can reach when comparing their viewpoints is that causality is not a law, nor a meta law, but a belief which every thinking being must hold to some extend.