When I read about philosophical, sociological and physical scientific attempts to root out metaphysical thought, this passage Borges’ “Funes the Memorious” comes to mind:

It was very difficult for him to sleep. To sleep is to be abstracted from the world; Funes, on his back in his cot, in the shadows, imagined every crevice and every moulding of the various houses which surrounded him. (I repeat, the least important of his recollections was more minutely precise and more lively than our perception of a physical pleasure or a physical torment.) Toward the east, in a section which was not yet cut into blocks of homes, there were some new unknown houses. Funes imagined them black, compact, made of a single obscurity; he would turn his face in this direction in order to sleep. He would also imagine himself at the bottom of the river, being rocked and annihilated by the current.

Without effort, he had learned English, French, Portuguese, Latin. I suspect, nevertheless, that he was not very capable of thought. To think is to forget a difference, to generalize, to abstract. In the overly replete world of Funes there were nothing but details, almost contiguous details.

In my wiki I just cross-indexed the passage above with Heraclitus: “The waking have one world in common, whereas each sleeper turns away to a private world of his own.”