Alas! how light a cause may move Dissension between hearts that love! Hearts that the world in vain had tried, And sorrow but more closely tied; That stood the storm when waves were rough, Yet in a sunny hour fall off. Tom Moore.The Light of the Harem, Vol. VII. Page 22.
Civil dissension is a viperous worm That gnaws the bowels of the commonwealth. Shakespeare.King Henry VI., Part I. Act III. Scene 1. (The King to Gloster and Winchester.)