Shasta and Aravis and Bree and Hwin have just met up and are exchanging stories.
Aravis immediately began, sitting quite still and using a rather different tone and style from her usual one. For in Calormen, story-telling (whether the stories are true or made up) is a thing you\'re taught, just as English boys and girls are taught essay-writing. The difference is that people want to hear the stories, whereas I never heard of anyone who wanted to read the essays.
Alas, Lewis is right.