1. Heraclitus the obscure said “One cannot pass twice through the same stream.” Heraclitus the obscure had a disciple who did not stop with that, he went further and added, “One cannot do it even once.” Poor Heraclitus, to have such a disciple! By this amendment the thesis of Heraclitus was so improved that it became an Eleatic thesis which denies movement, and yet this disciple only desired to be a disciple of Heraclitus…and to go further…not back to the position Heraclitus had abandoned.
    — Sören Kierkegaard, Fear and Trembling