Heraclitus himself, for all his belief in change, allowed something everlasting. The conception of eternity as opposed to endless duration, which comes from Parmenides, is not to be found in Heraclitus, but in his philosophy the central fire never dies But fire is something continually changing, and its permanence is rather that of a process than that of a substance - though this view should not be attributed to Heraclitus.p. 46.

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