Be convinced that to be happy means to be free and that to be free means to be brave. Therefore do not take lightly the perils of war.
ThucydidesYou 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.
Thucydides