The French philosopher Gabriel Marcel (1889–1973) distinguished between a problem, “something met which bars my passage” and “is before me in its entirety,” and a mystery, “something in which I find myself caught up, and whose essence is not before me in its entirety.”69 We have to remove a problem before we can proceed, but we are compelled to participate in a mystery—rather as the Greeks flung themselves into the rites of Eleusis and grappled with their mortality. “A mystery is something in which I am myself involved,” Marcel continued, “and it can therefore only be thought of as a sphere
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