To my shame, I refused to learn it of his gentleness, but even the most vain and foolish knight can learn when the lesson is tailored properly to his needs, Milord Champion.
A true knight learns humility in the face of the Grail.
He had been so small . . . And now it was for Robb that she waited . . . for Robb, and for Jaime Lannister, the gilded knight who men said had never learned to wait at all.
The knight agreed to try, and got on slowly but surely, for the colt was a gallant fellow, and soon learned to love his new master, though he was freakish and wild.
The knight in whom I'm interest went back to find the pretty face, and learned that the princesses had spun themselves free and all gone and married, but one.
"Raistlin and the Knight of Solamnia" by Margaret Weis and Tracy Hickman tells how the young mage helped a stern knight learn a hard lesson.
The Knight was in the service of a middle prince away from Hadeln, but the knight had learnt that his mother back in Otterndorf had been accused of witchcraft, found guilty, and so was to be burnt at the stake at the east gate of the town.
The fairies complain to each other about Selene's conduct: "Surely this knight might well have learnt on earth/Such moral truths as she is teaching him."
Ere they had reached their journey's end the knight had learned all that he would know of his men, their doings and their intentions.