“There are men whom nothing but a physical punishment will bring to reason, and with these we shall have to deal at some time in our lives. A lady is insulted or annoyed by an unwieldy bargee, or an importunate and dishonest cabman. One well-dealt blow settles the whole matter….A man therefore, whether he aspires to be a gentleman or not, should learn to box….There are but few rules for it, and those are suggested by common sense. Strike out, strike straight, strike suddenly; keep one arm to guard, and punish with the other. Two gentlemen never fight; the art of boxing is brought into use in punishing a stronger and more imprudent man of a class beneath your own.” — 1859 British author of The Habits of a Good Society, cited on p. 82 of Steven Pinker’s The Better Angels of Our Nature.