That is entirely wrong, go read some of the Chivalry prose written from the 12th century to the fourteenth or even fifteenth. Or even research the Chivalric orders, such as the Order of the Garter or the Order of the Star, both of which produced their own written codes of chivalry to instruct knights on how to conduct themselves.
It's a more modern view that knights were simply men in flashy armour who were little better than bandits, as those who did so were reviled and outright punished in Medieval Europe.
+1. Honor and largess were key things that differentiated rich peasants and actual nobility.
