back to the future III it was from

and that is easy - Harry Potter and the Chamberpot.

Here are two from the same thing:
“All the world will be your enemy, Prince with a Thousand Enemies, and whenever they catch you, they will kill you. But first they must catch you, digger, listener, runner, prince with the swift warning. Be cunning and full of tricks and your people shall never be destroyed.”
“My heart has joined the Thousand, for my friend stopped running today.”