The skin of the coward changes color all the time, he can't get a grip on himself, he can't sit still, he squats and rocks, shifting his weight from foot to foot, his heart racing, pounding inside the fellow's ribs, his teeth chattering. He dreads some grisly death. But the skin of a brave soldier never blanches. He's all control. Tense but no great fear.
HomerThese nights are endless, and a man can sleep through them, or he can enjoy listening to stories, and you have no need to go to bed before it is time. Too much sleep is only a bore. And of the others, any one whose heart and spirit urge him can go outside and sleep, and then, when the dawn shows, breakfast first, then go out to tend the swine of our master. But we two, sitting here in the shelter, eating and drinking, shall entertain each other remembering and retelling our sad sorrows. For afterwards a man who has suffered much and wandered much has pleasure out of his sorrows.
Homer