All the spiritual fragments we have inherited from the work of Heraclitus, many of which are deeply enigmatic, are here processed in an organic and comprehensible way, in order to reveal the bitter truths of yesterday and today, the directions for navigating the constant struggle of life, as well as the scientific perspective and the deeper metaphysical background of concepts, problems, and quests that have occupied, continue to occupy, and will always occupy all those who have eyes to see, ears to hear, and minds to understand.