"Look at These People, These Human Beings, Consider Their Potential. from the Day They Arrive on This Planet and Blinking, Step into the Sun, There Is More to see than Can Ever Be Seen, More to do... No, Hold On... Sorry, That's the Lion King"

As said by the Doctor in The Christmas Invasion

Sycorax Leader: I can summon the armada and take this world by force! The Doctor: Well, yeah, you could, you could do that, course you could, but why? Look at these people, these human beings, consider their potential. From the day they arrive on this planet and blinking, step into the sun, there is more to see than can ever be seen, more to do… no, hold on… sorry, that’s the Lion King… but the point still stands! Leave them alone! Sycorax Leader: Or what? The Doctor: Or… [grabs Sycorax broadsword] The Doctor: ...I challenge you! [the Sycorax roar and shout] The Doctor: Ooh, that struck a chord…