My Little Pony: Friendship is Magic, Season 1

Princess Celestia:
Why so glum, my faithful student? Are you not happy that your quest is complete and you can return to your studies in Canterlot?

Twilight Sparkle:
That's just it. Just when I learn how wonderful it is to have friends, I have to leave them.

Princess Celestia:
Spike, take a note, please. [Spike writes something as she dictates.] "I, Princess Celestia, hereby decree that the unicorn Twilight Sparkle shall take on a new mission for Equestria. She must continue to study the magic of friendship. She must report to me her findings, from her new home...in Ponyville!"

[Twilight's friends gather around her.]

Twilight Sparkle:
Oh, thank you, Princess Celestia! I'll study harder than ever before!

[Round of applause.]

Pinkie Pie:
Isn't this exciting? Are you excited? 'Cause I'm excited, I've never been so excited! Well, except for the time that I went- [gasps] But I mean, really...