I am writing a paper about Aristotle's Nicomachean Ethics, and I have come across a concept I am struggling to explain. I am supposed to use Aristotle's description of courage from Book III and describe how his definition of virtue (previously discussed in Book I and II) relates to it. I think the issue is that I am having a hard time grasping exactly what he is saying about courage in Book III. Perhaps this is because philosophy is not my forte, but I am having a hard time following it. Any help would be greatly appreciated!