In a supremely important fragment Heraclitus declares, “You may search the limits of the soul without ever finding them, go down any road you will; such a profound reality it has” (Fr. 45). It would not be unfair to suggest that we have taken the scientific worldview he made possible to its very limits in the opposite direction: happiness is caused by endorphins, mother love is programmed by genes and triggered by chemicals; a full-page ad in my university’s magazine recently boasted a picture of a chromosome with the heading, “This is your life.” The soul has so shrunken from view that far
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