I figured I'd kick off the discussion of knightly/chivalric virtues and start with the virtue of Largesse.
Largesse is generosity, but those of us here in the modern day may find the historical concept of it a little surprising. A truly chivalrous knight wasn't necessarily expected to be generous to those of a lower station in society. Helping the poor was "charity", but "largesse" is showing generosity to those above you, such as your lord. It could also extend laterally, to your fellow knights. But it was assumed, and highly valued, that a knight would bring gifts to his lord from the spoils of war, and other such sources.
I remember reading somewhere online about a historical account where a knight had come across a couple that was running away from their home. A young lady of high birth was running away with a commoner, perhaps the steward of the household or something along those lines. They had taken money, and were setting off for someplace where they could start over and be together. This sounds almost like a Hollywood movie at first, until you hear what the knight did. Upon learning of this, he took their money, sent them on their way, now destitute, and then returned to town and spent the money on his fellow knights, buying them food and drink. And then retold the story of how he obtained the money, and held it high as a shining example of his chivalry. He was showing the couple kindness by not dragging them back home, and yet deprived them of the funds that would have permitted them to commit this wrong-doing (mixing of classes, eloping, etc). He then showed Largesse by sharing his well-earned money with his fellow knights.
To the modern person, this sounds monstrous. But we have to remember how integral the classes and stations of society were in those times, and the importance that was placed upon it.
Bringing Largesse into the 21st century, how do you think it should be treated? Being generous to those around you is always a good thing of course, but do you think any of the historical notions have a place in today's society?