"Aristotle argues that happiness requires good habits, and habits must be acquired early if they are to be acquired at all. Virtues are not mere habits, since they involve rational choice and the attempt to do right. But, like vices, they are acquired by habit. A vice is not like a facial tic or a stoop, since it is a way of intending things – intending against reason, so to speak, and planning to thwart our better plans. Virtues, too, are expressed in intentional action. The courageous man is not the one who runs angry and oblivious into battle: for rashness is as much a vice as cowardice, and one that jeopardizes every rational enterprise. Courage is the settled disposition to do what is right, whether or not anger or fear counsel some other course of action. It involves the whole self, and is shaped by the rational choices that it also shapes. No person's courage is exactly like another's and each forms a strand in the thing called character, which is the very moral heart and selfhood of the person, the object of love and hate, of friendship and enmity."