Note 541 — Part II—The Worldlings (continued 4)

After the constant conjunction of two objects—heat and flame, for instance, weight and solidity—we are determined by custom alone to expect the one from the appearance of the other. All inferences from experience are effects of custom, not of reasoning.... "Upon the whole, there appears not, throughout all nature, any one instance of connection which is conceivable by us. All events seem entirely loose and separate; one event follows another; but we can never observe any tie between them. They seem conjoined, but never connected."—Hume's Essays, 4 vols., 1760, III. 117.