You can now, if you choose, employ your present success to advantage, so as to keep what you have got and gain honour and reputation besides, and you can avoid the mistake of those who meet with an extraordinary piece of good fortune, and are led on by hope to grasp continually at something further, through having already succeeded without expecting it.
ThucydidesFor they had learned that true safety was to be found in long previous training, and not in eloquent exhortations uttered when they were going into action.
ThucydidesWars spring from unseen and generally insignificant causes, the first outbreak being often but an explosion of anger.
Thucydides