The Italians drew up the earliest dueling codes to protect and enforce honor; Flos duellatorum came out in 1410 and young gentlemen all over Europe studied its delicate ethical matters and the subtle new swordplay more suited to personal encounters than the slash-and-whack of battle. In 1550, Girolamo Muzio's Il duello succeeded it and was even more popular. Italians opened fencing schools, attended by eager young gentlemen from all over, and sent fencing masters to the rest of Europe. By 1480, Germany had opened dueling schools called Fechtschulen that enjoyed the special protection of the emperor himself and established a tradition beloved by the military and university students well into the twentieth century—some say the twenty-first.

The notion of a gentleman defending his personal honor, the notion that obsessed the Western world for centuries and spilled many gallons of the bluest blood, now seems as remote as the urge to throw virgins down volcanoes. Nobody now cherishes his personal honor or inspects that of others. Short of indictable felonies, nobody cares. We wouldn't know how to measure it; the concept has vanished. Military valor still lends some luster, though Vietnam cast a shadow on it, and large amounts of money command universal respect, but the word "honor" survives only in a few state documents yellowing under glass. Jefferson was fond of it.

Whatever honor was, only gentlemen had it. Only gentlemen needed to defend it, which made their lives more perilous than those of the lesser beings, who could shrug and laugh off an insult. If a lesser being sent a challenge to a gentleman, the gentleman also could shrug and laugh it off, or send some lackeys to beat the insolent fellow with cudgels.

"Gentleman" has today become a rather idle compliment rarely invoked. It even carries overtones of the sissy, quite the opposite of its old role. Now any upstart lad can spend a couple of days mastering gentlemanly requirements: use the accepted forms of address, hold the door open for a lady, remember to say "please" and "thank you" in social if not in business situations. Use your napkin, not the tablecloth. Don't bully the waiter. Don't wipe your nose on your sleeve. Once he's learned the rules, he's accepted as a gentleman with no questions asked, but in former times he'd be a scoundrel of the worst order. Aping his betters. Flying false colors.

Manners had nothing to do with it. You could be as rude, surly, and bad-tempered as you liked, beat your wife, rape your servants, strew illegitimate children far and wide, drink and gamble till the cows came home, and let your bills pile up for decades till your tailor and vintner starved, but you were always a gentleman because you were born one, and so was your son. It came down through your family by way of inherited estates and ancient medieval fiefdoms and service to your king. Its privileges were many; its responsibilities were bloody.

You could be created an instant gentleman by the monarch, either quietly, for private favors done or money lent, or loudly, for valor in battle. Pumping up his troops before Agincourt, Shakespeare's Henry V said,

Once gentled, he developed an honor. If someone said he was no gentleman, it required a challenge. He could lose respect by cowardice, but he lost gentleman's rank oply by committing one of the offenses outlined in the code: perjury, burning his neighbor's crops, opening a shop. Once he'd lost rank, if he sent a gentleman a challenge, the gentleman wouldn't bother to answer. This was the ultimate insult.

Gentlemen were careful not to enter into duels with non-gentlemen because, if they lost or got killed, it stained the family honor backward and forward for generations.