My Little Pony: Friendship Is Magic2010

Princess Celestia:
I have every confidence you will succeed. And when you do, I'll know you are ready to move on to the next level of your studies.

Twilight Sparkle:
But what if I fail?

Princess Celestia:
You won't.

Twilight Sparkle:
But what if...

Princess Celestia:
You won't. [she stands at the doorway to the throne room with her sister, Princess Luna] But Twilight, in the end, it must be you and you alone who ultimately assists Princess Cadence and Shining Armor in doing what needs to be done to protect the empire. Do you understand?

Twilight Sparkle:
Mm-hm.

Princess Celestia:
Then go. There is no time to lose.