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Men in all societies possess the biological equipment to remove their hats or shoes, but it is the birth within a particular culture that decides that a Jew will keep his hat and shoes on in his place of worship, a Mohammedan will take off his shoes, and a Christian will keep his shoes on but remove his hat.

PETER FARB (1968). “MAN'S RISE TO CIVILIZATION”
Men in all societies possess the biological equipment to remove their hats or shoes, but it is the birth within a particular culture that decides that a Jew will keep his hat and shoes on in his place of worship, a