A deep glance proves its worth by becoming doubly profound. Not only downwards, which is the easier, more literal way of getting to the bottom of things. But rather there is also a depth upwards and forwards which takes up into itself profound material from below. Backwards and forwards are then as in the movement of a wheel, which simultaneously dips and scoops. Real depth always occurs in double-edged movement.
Ernst Bloch, The Principle of Hope, Vol. 1
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