Hume: Matters of fact and relation of idea's In David Hume's Enquiry Concerning Human Understanding, he attempts, by way of empiricism, to uncover the basis for knowledge and reasoning. Hume deals with the principle of induction, and his views on synthetic and analytic truths. Take his favourite example: his belief that the sun will rise tomorrow. Clearly, this is a matter of fact; it rests on our conviction that each sunrise is an effect caused by the rotation of the earth. But our belief in that causal relation is based on past observations, and our confidence that it will continue tomor