“‘Anger is useful,’ says our adversary, ‘because it makes men more ready to fight.’ According to that mode of reasoning, then, drunkenness also is a good thing, for it makes men insolent and daring, and many use their weapons better when the worse for liquor. ... No man becomes braver through anger, except one who without anger would not have been brave at all: anger does not therefore come to assist courage, but to take its place.”