The things brought by ill fortune, taking advantage of the feebleness of those brought by good fortune, pursued them closely. They went up to heaven and there asked Zeus to tell them how they should behave with regard to men.Zeus told them that they should present themselves to men not all together but only one at a time.And that is why the bad things, living near to men, assail them constantly, while the good things, who have to come down from the sky, only arrive at long intervals.
Thus we see how good fortune never reaches us quickly, while bad fortune strikes us every day.