Gael: When I grow up, I want to be just like you.
Lucy Pevensie: When you grow up, you should be just like you.
Coriakin: To defeat the darkness out there, you must defeat the darkness inside yourself.
Edmund Pevensie: Squirt? I'm a king.
Lucy Pevensie: Not in this world.
Eustace: That giant rat thing just tried to claw my face off!
Reepicheep: I was merely trying to expel the water from your lungs, sir.
Eustace: It talked! Did you see? Did you hear that? It just talked!
Telmarine sailor: He always talks.
Caspian: Actually, it's getting him to shut up that's the trick.
Reepicheep: We have nothing if not belief.
Aslan: You have returned for a reason. Your adventure begins now.
Answer: He's suppose to be the same age as in the novels, so about 16. "Voyage of the Dawn Treader" takes place 3 years after "Prince Caspian", so 2306 (Narnia year). He was born 2290 (NY). However, since Caspian is around Peter's age, they chose an older actor to play Caspian to match William Moseley's age.