We have to be faster in calming down a resentment than putting out a fire, because the consequences of the first are infinitely more dangerous than the results of the last; fire ends burning down some houses at the most, while the resentment can cause cruel wars, with the ruin and total destruction of nations.
HeraclitusAll things are in flux; the flux is subject to a unifying measure or rational principle. This principle (logos, the hidden harmony behind all change) bound opposites together in a unified tension, which is like that of a lyre, where a stable harmonious sound emerges from the tension of the opposing forces that arise from the bow bound together by the string.
Heraclitus