From Susan Sontag in At the Same Time:
"At the center of our moral life and our moral imagination are the great models of resistance: the great stories of those who have said no. No, I will not serve... Courage has no moral value in itself, for courage is not, in itself, a moral virtue. Vicious scoundrels, murderers, terrorists may be brave. To describe courage as a virtue, we need an adjective: we speak of 'moral courage' -- because there is such a thing as amoral courage, too."