How we cite our quotes:
"I shouldn't mind a good thick slice of bread and margarine this minute," [Edmund] added. But the spirit of adventure was rising in them all, and no one really wanted to be back at school. (2.14)
A spirit for adventure is necessary for courage in Narnia. Can't have one without the other. Those Pevensie children could teach a certain hobbit a thing or two, don't you think?
"I never quite believed in the ghosts. But those two cowards you've just shot believed all right. They were more frightened of taking me to my death than I was of going!" (3.25)
The first Telmarines we meet in the story are those two blokes. Notice how their fear of nature and the supernatural opposes the courage and spirit of adventure embodied by the Pevensie children. Come on, guys, adult-up already.
But when day came, with a sprinkle of rain, and he looked about him and saw on every side unknown woods, wild heaths, and blue mountains, he thought how large and strange the world was and felt frightened and small. (5.38)
Caspian, like all Telmarines, fears the forest. But—and this is a big but—he gathers his courage to continue his journey. Of course, certain death lays behind him at Miraz's Castle—a fact that no doubt helps him gather said courage.