If I say that red is unlike blue, I make an assertion concerning a relation of ideas; but it is also matter of fact, and the contrary proposition is inconceivable.

If I remember[26] something that happened five minutes ago, that is matter of fact; and, at the same time, it expresses a relation between the event remembered and the present time.

It is wholly inconceivable to me that the event did not happen, so that my assurance respecting it is as strong as that which I have respecting any other necessary truth.

In fact, the man is either very wise or very virtuous, or very lucky, perhaps all three, who has gone through life without accumulating a store of such necessary beliefs which he would give a good deal to be able to disbelieve.
It would be beside the mark to discuss the matter further on the present occasion.

It is sufficient to point out that, whatever may be the differences, between mathematical and other truths, they do not justify Hume's statement.