It is admitted, one may hope, that common things are never commonplace. Birth is covered with curtains precisely because it is a staggering and monstrous prodigy. Death and first love, though they happen to everybody, can stop one’s heart with the very thought of them. But while this is granted, something further may be claimed. It is not merely true that these universal things are strange; it is moreover true that they are subtle. In the last analysis most common things will be found to be highly complicated.
Some men of science do indeed get over the difficulty by dealing only with the easy part of it: thus, they will call first love the instinct of sex, and the awe of death the instinct of self-preservation. But this is only getting over the difficulty of describing peacock green by calling it blue. There is blue in it. That there is a strong physical element in both romance and the Memento Mori makes them if possible more baffling than if they had been wholly intellectual. No man could say exactly how much his sexuality was colored by a clean love of beauty, or by the mere boyish itch for irrevocable adventures, like running away to sea. No man could say how far his animal dread of the end was mixed up with mystical traditions touching morals and religion. It is exactly because these things are animal, but not quite animal, that the dance of all the difficulties begins. The materialists analyze the easy part, deny the hard part and go home to their tea.
— What’s Wrong with the World (1910).